CA American Water Co. - San Marino (CA) Water Quality

CA American Water Co. - San Marino is a large public water system in EPA region 9 that provides tap water for the 91107, 91108, 91770, 91780 zip codes. It has 26 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 5.98 µg/L. The maximum reported level of Manganese was 15 µg/L. There were 2 contamintants found in the CA American Water Co. - San Marino water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane (20)
1,2,3-trichloropropane (20)
1,3-butadiene (20)
1,4-dioxane (20)
1-butanol (18)
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (16)
1H,1H,2H,2H-perfluorodecane sulfonic acid (16)
1H,1H,2H,2H-perfluorohexane sulfonic acid (16)
1H,1H,2H,2H-perfluorooctane sulfonic acid (16)
2,4-dinitrotoluene (35)
2,6-dinitrotoluene (35)
2-methoxyethanol (18)
2-propen-1-ol (Allyl Alcohol) (18)
4,4'-dichloro dichlorophenyl ethylene (DDE) (35)
4,8-dioxa-3H-perfluorononanoic acid (16)
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (16)
alpha-hexachlorocyclohexane (18)
anatoxin-a (8)
bromochloromethane (Halon 1011) (20)
bromomethane (20)
Butylated Hydroxyanisole (18)
chlorate (32)
chlorodifluoromethane (HCFC-22) (20)
chloromethane (20)
chlorpyrifos (18)
chromium (32)
chromium-6 (32)
cobalt (32)
cylindrospermopsin (8)
dimethipin (18)
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (34)
ethoprop (18)
Germanium (18)
HAA5 (five regulated haloacetic acids) (16)
HAA6Br (six brominated haloacetic acids) (16)
HAA9 (nine haloacetic acids) (16)
hexafluoropropylene oxide dimer acid (GenX) (16)
lithium (16)
Manganese (18)
methyl-tertiary-butyl-ether (MTBE) (30)
molinate (35)
molybdenum (32)
N-ethyl perfluorooctanesulfonamidoacetic acid (16)
N-methyl perfluorooctanesulfonamidoacetic acid (16)
nitrobenzene (30)
nonafluoro-3,6-dioxaheptanoic acid (16)
o-toluidine (18)
oxyfluorfen (18)
perchlorate (31)
perfluoro(2-ethoxyethane)sulfonic acid (16)
perfluoro-3-methoxypropanoic acid (16)
perfluoro-4-methoxybutanoic acid (16)
perfluorobutanesulfonic acid (36)
perfluorobutanoic acid (16)
perfluorodecanoic acid (16)
perfluorododecanoic acid (16)
perfluoroheptanesulfonic acid (16)
perfluoroheptanoic acid (36)
perfluorohexanesulfonic acid (36)
perfluorohexanoic acid (16)
perfluorononanoic acid (36)
perfluorooctanesulfonic acid (36)
perfluorooctanoic acid (36)
perfluoropentanesulfonic acid (16)
perfluoropentanoic acid (16)
perfluorotetradecanoic acid (16)
perfluorotridecanoic acid (16)
perfluoroundecanoic acid (16)
profenofos (18)
quinoline (18)
s-ethyl-dipropylthiocarbamate (EPTC) (35)
strontium (32)
tebuconazole (18)
terbacil (35)
total microcystins (8)
Total Permethrin (18)
tribufos (18)
vanadium (32)

1,1-dichloroethane (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

0.05 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.02 µg/L

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

0.06 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.03 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

1,2,3-trichloropropane (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

1,3-butadiene (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.1 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.1 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.1 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.1 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.1 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.1 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.1 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.1 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.1 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.1 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.1 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.1 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.1 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.1 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.1 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.1 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.1 µg/L
Reference Level: ?

Contaminant Details

1,4-dioxane (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

2/2/2015

10 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.07 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

0.27 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.2 µg/L

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.07 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.07 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

11/5/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.07 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

0.28 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.21 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.07 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.07 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.07 µg/L
Reference Level: ?

Contaminant Details

1-butanol (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<2 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<2 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<2 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<2 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<2 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<2 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<2 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<2 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<2 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<2 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<2 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<2 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<2 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<2 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<2 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<2 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<2 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<2 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: 700 µg/L

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

2,4-dinitrotoluene (35)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

2,6-dinitrotoluene (35)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

2-methoxyethanol (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.4 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.4 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.4 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.4 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.4 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.4 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.4 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.4 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.4 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.4 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.4 µg/L
Reference Level: 21 µg/L

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.5 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.5 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.5 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.5 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.5 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.5 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.5 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.5 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.5 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.5 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.5 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.5 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.5 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.5 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.5 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.5 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.5 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.5 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.5 µg/L
Reference Level: 35 µg/L

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (35)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<0.8 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<0.8 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.8 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 0.8 µg/L
Reference Level: ?

Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.002 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.002 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.002 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.002 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.002 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.002 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.002 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.002 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

alpha-hexachlorocyclohexane (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.01 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.01 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.01 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.01 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.01 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.01 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.01 µg/L
Reference Level: 0.006 µg/L

Contaminant Details

anatoxin-a (8)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/25/2019

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2019

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

10/21/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

10/8/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/16/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

9/3/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/19/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/6/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

bromochloromethane (Halon 1011) (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.06 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0 µg/L

4/1/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.06 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.06 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.06 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.06 µg/L

Below Reporting Level

11/12/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.12 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.06 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.06 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.06 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.06 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.06 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.06 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.06 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.06 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.06 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.06 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.06 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.06 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.06 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.06 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.06 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.06 µg/L
Reference Level: ?

Contaminant Details

bromomethane (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

Butylated Hydroxyanisole (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

chlorate (32)

DSMRT for MWD

Distribution System - SW ℹ️

99 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 79 µg/L

2/2/2015

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

55 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 35 µg/L

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

240 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 220 µg/L

11/12/2014

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

220 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 200 µg/L

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

120 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 100 µg/L

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

110 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 90 µg/L

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

110 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 90 µg/L

11/12/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

190 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 170 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

120 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 100 µg/L

11/10/2014

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

88 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 68 µg/L

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

68 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 48 µg/L

11/10/2014

10 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

300 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 280 µg/L

11/5/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

270 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 250 µg/L

11/5/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

110 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 90 µg/L

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

370 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 350 µg/L

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

120 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 100 µg/L

11/4/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

240 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 220 µg/L

8/12/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

86 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 66 µg/L

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

45 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 25 µg/L

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

230 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 210 µg/L

5/19/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

270 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 250 µg/L

5/14/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

260 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 240 µg/L

5/14/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

230 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 210 µg/L

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

120 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 100 µg/L

5/14/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

96 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 76 µg/L

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

210 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 190 µg/L

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

92 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 72 µg/L

5/13/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

76 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 56 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

75 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 55 µg/L

5/13/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

43 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 23 µg/L

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

34 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 14 µg/L

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

160 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 140 µg/L

5/12/2014

11 years ago

Minimum Reporting Level: 20 µg/L
Reference Level: ?

Contaminant Details

chlorodifluoromethane (HCFC-22) (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.08 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.08 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.08 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.08 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.08 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.08 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.08 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.08 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.08 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.08 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.08 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.08 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.08 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.08 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.08 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.08 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.08 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.08 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.08 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.08 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.08 µg/L
Reference Level: ?

Contaminant Details

chloromethane (20)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

11/24/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

chlorpyrifos (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: 2 µg/L

Contaminant Details

chromium (32)

DSMRT for MWD

Distribution System - SW ℹ️

7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.8 µg/L

2/2/2015

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.1 µg/L

2/2/2015

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

9.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9 µg/L

12/4/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

9.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.7 µg/L

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

9.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.2 µg/L

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

8.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 7.9 µg/L

11/12/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

6.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.6 µg/L

11/12/2014

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

6.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.4 µg/L

11/12/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

7.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 7.6 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

7.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.9 µg/L

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

9.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.1 µg/L

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

8.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 8 µg/L

11/5/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

8.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 8 µg/L

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

12.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 12 µg/L

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

5.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.1 µg/L

11/4/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

5.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.5 µg/L

8/12/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.1 µg/L

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

5.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.7 µg/L

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

8.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 8.7 µg/L

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

9.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.6 µg/L

5/14/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

7.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 7 µg/L

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.8 µg/L

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

6.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.7 µg/L

5/14/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

6.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.7 µg/L

5/14/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

9.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.7 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

8.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 8.7 µg/L

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

8.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 8.3 µg/L

5/13/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

6.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.4 µg/L

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0 µg/L

5/13/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

0.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0 µg/L

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

6.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.7 µg/L

5/12/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

chromium-6 (32)

DSMRT for MWD

Distribution System - SW ℹ️

5.84 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 5.81 µg/L

2/2/2015

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.04 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.01 µg/L

2/2/2015

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

11.3 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 11.27 µg/L

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

9.76 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 9.73 µg/L

11/12/2014

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

8.37 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.34 µg/L

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

8.35 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.32 µg/L

11/12/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

7.93 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 7.9 µg/L

11/12/2014

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

8.75 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.72 µg/L

11/10/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

6.97 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 6.94 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

6.5 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 6.47 µg/L

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.05 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.02 µg/L

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

8.32 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.29 µg/L

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

8.21 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.18 µg/L

11/5/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

8.04 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.01 µg/L

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

10.27 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 10.24 µg/L

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

4.72 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 4.69 µg/L

11/4/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

6.32 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 6.29 µg/L

8/12/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.04 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.01 µg/L

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

5.96 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 5.93 µg/L

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

9.09 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 9.06 µg/L

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

9.79 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 9.76 µg/L

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

7.41 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 7.38 µg/L

5/14/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

7.05 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 7.02 µg/L

5/14/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

6.73 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 6.7 µg/L

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

6.66 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 6.63 µg/L

5/14/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

8.98 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.95 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

8.97 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.94 µg/L

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

8.39 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 8.36 µg/L

5/13/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

7.1 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 7.07 µg/L

5/13/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

0.05 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.02 µg/L

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

0.04 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.01 µg/L

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

6.9 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 6.87 µg/L

5/12/2014

11 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: ?

Contaminant Details

cobalt (32)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<1 µg/L

Below Reporting Level

2/2/2015

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<1 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<1 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<1 µg/L

Below Reporting Level

11/12/2014

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<1 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<1 µg/L

Below Reporting Level

11/10/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

11/10/2014

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<1 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<1 µg/L

Below Reporting Level

11/5/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<1 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<1 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<1 µg/L

Below Reporting Level

8/12/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<1 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<1 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<1 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<1 µg/L

Below Reporting Level

5/14/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

5/14/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<1 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

cylindrospermopsin (8)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

11/25/2019

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

11/12/2019

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

10/21/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

10/8/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

9/16/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

9/3/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/19/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/6/2019

6 years ago

Minimum Reporting Level: 0.09 µg/L
Reference Level: 0.7 µg/L

Contaminant Details

dimethipin (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: 140 µg/L

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (34)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

ethoprop (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.03 µg/L
Reference Level: 1.14 µg/L

Contaminant Details

Germanium (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.3 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.3 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.3 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.3 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.3 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.3 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

HAA5 (five regulated haloacetic acids) (16)

1499 Wembley

Distribution System ℹ️

1.59 µg/L

Meets Reporting Threshold

2/11/2020

5 years ago

2641 Oneida

Distribution System ℹ️

0.45 µg/L

Meets Reporting Threshold

2/11/2020

5 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

Meets Reporting Threshold

2/11/2020

5 years ago

597 S Berkeley

Distribution System ℹ️

0 µg/L

Meets Reporting Threshold

2/11/2020

5 years ago

1000 Oak Grove

Distribution System ℹ️

4.22 µg/L

Meets Reporting Threshold

11/6/2019

6 years ago

1499 Wembley

Distribution System ℹ️

2.35 µg/L

Meets Reporting Threshold

11/6/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

1.16 µg/L

Meets Reporting Threshold

11/6/2019

6 years ago

2641 Oneida

Distribution System ℹ️

1.07 µg/L

Meets Reporting Threshold

11/6/2019

6 years ago

1499 Wembley

Distribution System ℹ️

2.8 µg/L

Meets Reporting Threshold

8/12/2019

6 years ago

2641 Oneida

Distribution System ℹ️

1.12 µg/L

Meets Reporting Threshold

8/12/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

0.95 µg/L

Meets Reporting Threshold

8/12/2019

6 years ago

1000 Oak Grove

Distribution System ℹ️

0.58 µg/L

Meets Reporting Threshold

8/12/2019

6 years ago

2641 Oneida

Distribution System ℹ️

5.98 µg/L

Meets Reporting Threshold

5/13/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

5.68 µg/L

Meets Reporting Threshold

5/13/2019

6 years ago

1499 Wembley

Distribution System ℹ️

2.83 µg/L

Meets Reporting Threshold

5/13/2019

6 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

Meets Reporting Threshold

5/13/2019

6 years ago

Minimum Reporting Level: 0.5 µg/L
Reference Level: 60 µg/L

Contaminant Details

HAA6Br (six brominated haloacetic acids) (16)

1499 Wembley

Distribution System ℹ️

1.66 µg/L

2/11/2020

5 years ago

2641 Oneida

Distribution System ℹ️

0.45 µg/L

2/11/2020

5 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

2/11/2020

5 years ago

597 S Berkeley

Distribution System ℹ️

0 µg/L

2/11/2020

5 years ago

1000 Oak Grove

Distribution System ℹ️

3.2 µg/L

11/6/2019

6 years ago

1499 Wembley

Distribution System ℹ️

2.85 µg/L

11/6/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

1.02 µg/L

11/6/2019

6 years ago

2641 Oneida

Distribution System ℹ️

0.91 µg/L

11/6/2019

6 years ago

1499 Wembley

Distribution System ℹ️

2.66 µg/L

8/12/2019

6 years ago

2641 Oneida

Distribution System ℹ️

0.92 µg/L

8/12/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

0.43 µg/L

8/12/2019

6 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

8/12/2019

6 years ago

2641 Oneida

Distribution System ℹ️

6.22 µg/L

5/13/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

6.05 µg/L

5/13/2019

6 years ago

1499 Wembley

Distribution System ℹ️

3.26 µg/L

5/13/2019

6 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

5/13/2019

6 years ago

Minimum Reporting Level: 0 µg/L
Reference Level: ?

Contaminant Details

HAA9 (nine haloacetic acids) (16)

1499 Wembley

Distribution System ℹ️

2.25 µg/L

2/11/2020

5 years ago

2641 Oneida

Distribution System ℹ️

0.45 µg/L

2/11/2020

5 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

2/11/2020

5 years ago

597 S Berkeley

Distribution System ℹ️

0 µg/L

2/11/2020

5 years ago

1000 Oak Grove

Distribution System ℹ️

5.42 µg/L

11/6/2019

6 years ago

1499 Wembley

Distribution System ℹ️

3.7 µg/L

11/6/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

1.57 µg/L

11/6/2019

6 years ago

2641 Oneida

Distribution System ℹ️

1.44 µg/L

11/6/2019

6 years ago

1499 Wembley

Distribution System ℹ️

4.06 µg/L

8/12/2019

6 years ago

2641 Oneida

Distribution System ℹ️

1.52 µg/L

8/12/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

0.95 µg/L

8/12/2019

6 years ago

1000 Oak Grove

Distribution System ℹ️

0.58 µg/L

8/12/2019

6 years ago

2641 Oneida

Distribution System ℹ️

9.43 µg/L

5/13/2019

6 years ago

597 S Berkeley

Distribution System ℹ️

9.16 µg/L

5/13/2019

6 years ago

1499 Wembley

Distribution System ℹ️

4.46 µg/L

5/13/2019

6 years ago

1000 Oak Grove

Distribution System ℹ️

0 µg/L

5/13/2019

6 years ago

Minimum Reporting Level: 0 µg/L
Reference Level: ?

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

lithium (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<9 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

91.9 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 82.9 µg/L

2/7/2024

21 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

28.9 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 19.9 µg/L

11/14/2023

24 months ago

Howland Well EPTDS

Howland Well ℹ️

<9 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<9 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<9 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<9 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<9 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

24.3 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 15.3 µg/L

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<9 µg/L

Below Reporting Level

5/30/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

21.9 µg/L

⚠️ Exceeds Reporting Level of 9 µg/L by 12.9 µg/L

5/22/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<9 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<9 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<9 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<9 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<9 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 9 µg/L
Reference Level: ?

Contaminant Details

Manganese (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

0.43 µg/L

Meets Reporting Threshold

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

12 µg/L

Meets Reporting Threshold

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

1.6 µg/L

Meets Reporting Threshold

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

4.5 µg/L

Meets Reporting Threshold

11/6/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

15 µg/L

Meets Reporting Threshold

11/5/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

0.92 µg/L

Meets Reporting Threshold

11/4/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

3 µg/L

Meets Reporting Threshold

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.4 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

0.54 µg/L

Meets Reporting Threshold

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

0.5 µg/L

Meets Reporting Threshold

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.4 µg/L

Below Reporting Level

5/7/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

1.6 µg/L

Meets Reporting Threshold

5/6/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

0.51 µg/L

Meets Reporting Threshold

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.4 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.4 µg/L
Reference Level: 300 µg/L

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (30)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<5 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<5 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<5 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<5 µg/L

Below Reporting Level

12/16/2003

21 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<5 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<5 µg/L

Below Reporting Level

7/31/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<5 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<5 µg/L

Below Reporting Level

5/6/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<5 µg/L

Below Reporting Level

5/6/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<5 µg/L

Below Reporting Level

5/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<5 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<5 µg/L

Below Reporting Level

2/11/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<5 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<5 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 5 µg/L
Reference Level: ?

Contaminant Details

molinate (35)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<0.9 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<0.9 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<0.9 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 0.9 µg/L
Reference Level: ?

Contaminant Details

molybdenum (32)

DSMRT for MWD

Distribution System - SW ℹ️

8.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 7.4 µg/L

2/2/2015

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

4.7 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.7 µg/L

2/2/2015

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

6.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.6 µg/L

11/12/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

6.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.3 µg/L

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

4.7 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.7 µg/L

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

3.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 2.4 µg/L

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

3.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 2.4 µg/L

11/12/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

7.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 6.1 µg/L

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

4.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.5 µg/L

11/10/2014

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

3.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 2.5 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

2.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.6 µg/L

11/10/2014

10 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

6.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.1 µg/L

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

5.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 4.6 µg/L

11/5/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1 µg/L

11/5/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

9.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 8.6 µg/L

11/4/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

7.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 6.1 µg/L

11/4/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

6.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.6 µg/L

8/12/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

4.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.3 µg/L

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

9.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 8.1 µg/L

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

6.8 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.8 µg/L

5/19/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

6.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.4 µg/L

5/14/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

6.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.3 µg/L

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

6.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.1 µg/L

5/14/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

5.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 4.1 µg/L

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

3.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 2.1 µg/L

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

6.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.1 µg/L

5/13/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

4.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.5 µg/L

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

4.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.3 µg/L

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

3.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 2.4 µg/L

5/13/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

1.8 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.8 µg/L

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

2.7 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.7 µg/L

5/12/2014

11 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.006 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.006 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.006 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.006 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.006 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.006 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.006 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.006 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.006 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.006 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.006 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.006 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.006 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.006 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.006 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.006 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.006 µg/L
Reference Level: ?

Contaminant Details

nitrobenzene (30)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<10 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<10 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<10 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<10 µg/L

Below Reporting Level

12/16/2003

21 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<10 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<10 µg/L

Below Reporting Level

7/31/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<10 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<10 µg/L

Below Reporting Level

5/6/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<10 µg/L

Below Reporting Level

5/6/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<10 µg/L

Below Reporting Level

5/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<10 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<10 µg/L

Below Reporting Level

2/11/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<10 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<10 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 10 µg/L
Reference Level: ?

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.02 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.02 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.02 µg/L
Reference Level: ?

Contaminant Details

o-toluidine (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.007 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.007 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.007 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.007 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.007 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.007 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.007 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.007 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.007 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.007 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.007 µg/L
Reference Level: ?

Contaminant Details

oxyfluorfen (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.05 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.05 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.05 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.05 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.05 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.05 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.05 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.05 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.05 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.05 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.05 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.05 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.05 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.05 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.05 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.05 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.05 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.05 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.05 µg/L
Reference Level: 200 µg/L

Contaminant Details

perchlorate (31)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<4 µg/L

Below Reporting Level

1/22/2004

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<4 µg/L

Below Reporting Level

10/27/2003

22 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<4 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<4 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<4 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<4 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<4 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<4 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<4 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<4 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 4 µg/L
Reference Level: ?

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoro-3-methoxypropanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoro-4-methoxybutanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorobutanesulfonic acid (36)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.09 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.09 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.09 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.09 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.09 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.09 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.09 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.09 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.09 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.09 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.09 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.09 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.09 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.09 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.09 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.09 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.09 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorobutanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

0.0053 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0003 µg/L

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.005 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.005 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.005 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.005 µg/L
Reference Level: ?

Contaminant Details

perfluorodecanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorododecanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoroheptanesulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluoroheptanoic acid (36)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.01 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.01 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.01 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.01 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.01 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.01 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.01 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.01 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.01 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorohexanesulfonic acid (36)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.03 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.03 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorohexanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorononanoic acid (36)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.02 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluorooctanesulfonic acid (36)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.04 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.04 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.04 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.04 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.04 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.04 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluorooctanoic acid (36)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.02 µg/L

Below Reporting Level

11/12/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

11/10/2014

10 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/19/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

5/12/2014

11 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoropentanesulfonic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.004 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.004 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.004 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.004 µg/L
Reference Level: ?

Contaminant Details

perfluoropentanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.003 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.003 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.003 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.003 µg/L
Reference Level: ?

Contaminant Details

perfluorotetradecanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.008 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.008 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.008 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.008 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.008 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.008 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.008 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.008 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.008 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.008 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.008 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.008 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.008 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.008 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.008 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.008 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.008 µg/L
Reference Level: ?

Contaminant Details

perfluorotridecanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.007 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.007 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.007 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.007 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.007 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.007 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.007 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.007 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.007 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.007 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.007 µg/L
Reference Level: ?

Contaminant Details

perfluoroundecanoic acid (16)

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.002 µg/L

Below Reporting Level

1/29/2025

9 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

2/7/2024

21 months ago

Howland Well EPTDS

Howland Well ℹ️

<0.002 µg/L

Below Reporting Level

11/14/2023

24 months ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.002 µg/L

Below Reporting Level

11/14/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

11/14/2023

24 months ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

11/13/2023

24 months ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.002 µg/L

Below Reporting Level

11/13/2023

24 months ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

11/13/2023

24 months ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

8/7/2023

2 years ago

Mission View Blend Facility

Mission View Blend Facility ℹ️

<0.002 µg/L

Below Reporting Level

5/30/2023

2 years ago

Hall Well 02 EPTDS

Hall Well 2 ℹ️

<0.002 µg/L

Below Reporting Level

5/22/2023

2 years ago

Howland Well EPTDS

Howland Well ℹ️

<0.002 µg/L

Below Reporting Level

5/22/2023

2 years ago

MWD Connection SM-1 EPTDS

MWD Intertie ℹ️

<0.002 µg/L

Below Reporting Level

5/22/2023

2 years ago

Danford Reservoir - NO3 Blending

Danford Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

5/16/2023

2 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.002 µg/L

Below Reporting Level

5/16/2023

2 years ago

Del Mar Well EPTDS

Del Mar Well ℹ️

<0.002 µg/L

Below Reporting Level

5/16/2023

2 years ago

Minimum Reporting Level: 0.002 µg/L
Reference Level: ?

Contaminant Details

profenofos (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.3 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.3 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.3 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.3 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.3 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.3 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.3 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.3 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: 0.3 µg/L

Contaminant Details

quinoline (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.02 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.02 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.02 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.02 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.02 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.02 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.02 µg/L
Reference Level: 0.01 µg/L

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (35)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<1 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<1 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<1 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: ?

Contaminant Details

strontium (32)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

1182.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1182.5 µg/L

2/2/2015

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

245.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 244.8 µg/L

2/2/2015

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

341.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 341.3 µg/L

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

293.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 292.8 µg/L

11/12/2014

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

284.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 284.3 µg/L

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

279 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 278.7 µg/L

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

231.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 231.5 µg/L

11/12/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

1048.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1048.4 µg/L

11/10/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

318.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 318.3 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

226 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 225.7 µg/L

11/10/2014

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

220.3 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 220 µg/L

11/10/2014

10 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

351.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 350.9 µg/L

11/5/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

329.5 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 329.2 µg/L

11/5/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

261.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 261.1 µg/L

11/5/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

251.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 251.1 µg/L

11/4/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

233.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 232.8 µg/L

11/4/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

1040.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1039.9 µg/L

10/6/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

904.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 904.3 µg/L

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

253.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 252.8 µg/L

7/14/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

1055.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1054.8 µg/L

6/12/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

256.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 255.8 µg/L

5/19/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

380.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 380.4 µg/L

5/14/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

370.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 369.8 µg/L

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

358.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 357.9 µg/L

5/14/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

265.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 264.9 µg/L

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

237.3 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 237 µg/L

5/14/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

1010.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1009.8 µg/L

5/13/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

379.2 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 378.9 µg/L

5/13/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

273.3 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 273 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

245.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 244.8 µg/L

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

244.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 244.5 µg/L

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

256.5 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 256.2 µg/L

5/12/2014

11 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

tebuconazole (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.2 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.2 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.2 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.2 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.2 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: 190 µg/L

Contaminant Details

terbacil (35)

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<2 µg/L

Below Reporting Level

1/22/2004

21 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

12/16/2003

21 years ago

1925 - LONGDEN - TR 01S/12W-02H01

1925 - LONGDEN - TREATED ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1948 - GRAND 01S/11W-07N02

1948 - GRAND ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1954 - MISSION VIEW 01S/11W-08E02

1954 - MISSION VIEW WELL 02 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

ROSEMEAD (1957) 01S/11W-07N01

ROSEMEAD (1957) ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

DEL MAR - 1968 01N/12W-36N02

DEL MAR - 1968 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

HALL WELL 01S/11W-09D02

HALL WELL ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

HOWLAND WELL 01S/11W-17B05

HOWLAND WELL ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

MARIPOSA WELL 03 01S/11W-08J07

MARIPOSA WELL 03 ℹ️

<2 µg/L

Below Reporting Level

8/6/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/31/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/28/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/19/2003

22 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/19/2003

22 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/18/2003

22 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/18/2003

22 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/17/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

7/16/2002

23 years ago

1921 B - OSWEGO - T 01N/12W-25E01

1921 B - OSWEGO - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

1924 - WINSTON - TR 01N/12W-26R01

1924 - WINSTON - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

1928 - LAMANDA PARK 01N/12W-26A01

1928 - LAMANDA PARK - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

LOMBARDY WELL 02 - 01N/12W-35B02

LOMBARDY WELL 02 - TREATED ℹ️

<2 µg/L

Below Reporting Level

2/11/2002

23 years ago

Minimum Reporting Level: 2 µg/L
Reference Level: ?

Contaminant Details

total microcystins (8)

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

11/25/2019

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

11/12/2019

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

10/21/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

10/8/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

9/16/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

9/3/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/19/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.3 µg/L

Below Reporting Level

8/6/2019

6 years ago

Minimum Reporting Level: 0.3 µg/L
Reference Level: ?

Contaminant Details

Total Permethrin (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.04 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.04 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.04 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.04 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.04 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.04 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.04 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.04 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.04 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.04 µg/L
Reference Level: 3.344 µg/L

Contaminant Details

tribufos (18)

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

8/19/2020

5 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.07 µg/L

Below Reporting Level

8/10/2020

5 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

2/20/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

2/3/2020

5 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

11/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.07 µg/L

Below Reporting Level

11/5/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

11/4/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.07 µg/L

Below Reporting Level

11/4/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

11/4/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

8/6/2019

6 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

<0.07 µg/L

Below Reporting Level

5/9/2019

6 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

<0.07 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

<0.07 µg/L

Below Reporting Level

5/8/2019

6 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

<0.07 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

5/6/2019

6 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

<0.07 µg/L

Below Reporting Level

5/6/2019

6 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

<0.07 µg/L

Below Reporting Level

5/6/2019

6 years ago

Minimum Reporting Level: 0.07 µg/L
Reference Level: 0.6 µg/L

Contaminant Details

vanadium (32)

DSMRT for MWD

Distribution System - SW ℹ️

21.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 21.7 µg/L

2/2/2015

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

2.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.2 µg/L

2/2/2015

10 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

6.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.3 µg/L

12/8/2014

10 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

15.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 15.2 µg/L

11/12/2014

10 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

10.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 10.4 µg/L

11/12/2014

10 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

5.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.7 µg/L

11/12/2014

10 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

5.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.3 µg/L

11/12/2014

10 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

5.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.2 µg/L

11/12/2014

10 years ago

DSMRT for MWD

Distribution System - SW ℹ️

15.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 15.4 µg/L

11/10/2014

10 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

5.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.6 µg/L

11/10/2014

10 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

5.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.5 µg/L

11/10/2014

10 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.8 µg/L

11/10/2014

10 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 7.8 µg/L

11/5/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

6.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.2 µg/L

11/5/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

15.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 15.5 µg/L

11/4/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

7.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 7.3 µg/L

11/4/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

3.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.2 µg/L

10/6/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

2.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.6 µg/L

8/12/2014

11 years ago

EP #12 - Del Mar post Chlorination

Del Mar Well ℹ️

15.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 15.5 µg/L

7/14/2014

11 years ago

Rosemead Reservoir EPTDS

Rosemead Reservoir ℹ️

5.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.3 µg/L

5/19/2014

11 years ago

DSMRT for Danford Reservoir & Del Mar Well

Distribution System - GW ℹ️

12.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 12.1 µg/L

5/14/2014

11 years ago

DSMRT for Longden Reservoir

Distribution System - GW ℹ️

8.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 8.4 µg/L

5/14/2014

11 years ago

EP #41 - Mission View post Chlorination

Mission View Well 2 ℹ️

5.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.1 µg/L

5/14/2014

11 years ago

Longden Well Nitrate Blending Effluent

Longden Reservoir ℹ️

4.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.6 µg/L

5/14/2014

11 years ago

DSMRT for Rosemead Reservoir

Distribution System - GW ℹ️

4.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.6 µg/L

5/14/2014

11 years ago

EP #26 - Danford Reservoir Effluent

Danford Reservoir ℹ️

14.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 14 µg/L

5/13/2014

11 years ago

DSMRT Hall, Mariposa, Mission V & Howland Wells

Distribution System - GW ℹ️

7.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 7 µg/L

5/13/2014

11 years ago

EP #43 - Hall Well post Chlorination

Hall Well 2 ℹ️

6.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 6.4 µg/L

5/13/2014

11 years ago

EP #40 - Mariposa post Chlorination

Mariposa Well 3 ℹ️

5.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5 µg/L

5/13/2014

11 years ago

DSMRT for MWD

Distribution System - SW ℹ️

2.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.4 µg/L

5/13/2014

11 years ago

EPTDS from MWD (SM1)

MWD Intertie ℹ️

2.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.1 µg/L

5/13/2014

11 years ago

EP #39 - Howland post Chlorination

Howland Well ℹ️

5.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 5.3 µg/L

5/12/2014

11 years ago

Minimum Reporting Level: 0.2 µg/L
Reference Level: ?

Contaminant Details

Sampling Facilities

Mission View Blend Facility
Ground Water (GW)

Mission View Blend FacilityEntry Point to the Distribution System (EP)

Danford Reservoir
Ground Water (GW)

Danford Reservoir - NO3 BlendingEntry Point to the Distribution System (EP)

EP #26 - Danford Reservoir EffluentEntry Point to the Distribution System (EP)

Hall Well 2
Ground Water (GW)

Hall Well 02 EPTDSEntry Point to the Distribution System (EP)

EP #43 - Hall Well post ChlorinationEntry Point to the Distribution System (EP)

Howland Well
Ground Water (GW)

Howland Well EPTDSEntry Point to the Distribution System (EP)

EP #39 - Howland post ChlorinationEntry Point to the Distribution System (EP)

Rosemead Reservoir
Ground Water (GW)

Rosemead Reservoir EPTDSEntry Point to the Distribution System (EP)

Del Mar Well
Ground Water (GW)

Del Mar Well EPTDSEntry Point to the Distribution System (EP)

EP #12 - Del Mar post ChlorinationEntry Point to the Distribution System (EP)

MWD Intertie
Surface Water (SW)

MWD Connection SM-1 EPTDSEntry Point to the Distribution System (EP)

EPTDS from MWD (SM1)Entry Point to the Distribution System (EP)

Mission View Well 2
Ground Water (GW)

EP #41 - Mission View post ChlorinationEntry Point to the Distribution System (EP)

Mariposa Well 3
Ground Water (GW)

EP #40 - Mariposa post ChlorinationEntry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

1000 Oak GroveDistribution System (DS)

1499 WembleyDistribution System (DS)

2641 OneidaDistribution System (DS)

597 S BerkeleyDistribution System (DS)

Longden Reservoir
Ground Water (GW)

Longden Well Nitrate Blending EffluentEntry Point to the Distribution System (EP)

Distribution System - SW
Surface Water (SW)

DSMRT for MWDMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

DSMRT for Longden ReservoirMaximum Residence Time (MR)

DSMRT for Danford Reservoir & Del Mar WellMaximum Residence Time (MR)

DSMRT Hall, Mariposa, Mission V & Howland WellsMaximum Residence Time (MR)

DSMRT for Rosemead ReservoirMaximum Residence Time (MR)

EP- #027 LAMANDA PARK RESERVOIR - MWD&OSWEGO
Multiple Sources (MX)

Lamanda Park Reservoir EffluentEntry Point to the Distribution System (EP)

1921 B - OSWEGO - TREATED
Ground Water (GW)

1921 B - OSWEGO - T 01N/12W-25E01SR (SR)

1924 - WINSTON - TREATED
Ground Water (GW)

1924 - WINSTON - TR 01N/12W-26R01SR (SR)

1925 - LONGDEN - TREATED
Ground Water (GW)

1925 - LONGDEN - TR 01S/12W-02H01SR (SR)

1928 - LAMANDA PARK - TREATED
Ground Water (GW)

1928 - LAMANDA PARK 01N/12W-26A01SR (SR)

1948 - GRAND
Ground Water (GW)

1948 - GRAND 01S/11W-07N02SR (SR)

1954 - MISSION VIEW WELL 02
Ground Water (GW)

1954 - MISSION VIEW 01S/11W-08E02SR (SR)

ROSEMEAD (1957)
Ground Water (GW)

ROSEMEAD (1957) 01S/11W-07N01SR (SR)

DEL MAR - 1968
Ground Water (GW)

DEL MAR - 1968 01N/12W-36N02SR (SR)

HALL WELL
Ground Water (GW)

HALL WELL 01S/11W-09D02SR (SR)

HOWLAND WELL
Ground Water (GW)

HOWLAND WELL 01S/11W-17B05SR (SR)

MARIPOSA WELL 03
Ground Water (GW)

MARIPOSA WELL 03 01S/11W-08J07SR (SR)

LOMBARDY WELL 02 - TREATED
Ground Water (GW)

LOMBARDY WELL 02 - 01N/12W-35B02SR (SR)

FAQ

Is CA American Water Co. - San Marino tap water safe to drink?

When was CA American Water Co. - San Marino last tested for water contamination?

The latest water samples were taken on January 29th, 2025.