City of Monterey Park Water Dept. (CA) Water Quality

City of Monterey Park Water Dept. is a large public water system in EPA region 9 that provides tap water for the 91754, 91755 zip codes. It has 11 facilities where the water supply was tested for 82 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 1.1 µg/L. The maximum reported level of Manganese was 1.7 µg/L. There were 2 contamintants found in the City of Monterey Park Water Dept. water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane
1,2,3-trichloropropane
1,3-butadiene
1,4-dioxane
1-butanol
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid
17-alpha-ethynylestradiol
17-beta-estradiol
1H,1H,2H,2H-perfluorodecane sulfonic acid
1H,1H,2H,2H-perfluorohexane sulfonic acid
1H,1H,2H,2H-perfluorooctane sulfonic acid
2,4-dinitrotoluene
2,6-dinitrotoluene
2-methoxyethanol
2-propen-1-ol (Allyl Alcohol)
4,4'-dichloro dichlorophenyl ethylene (DDE)
4,8-dioxa-3H-perfluorononanoic acid
4-androstene-3,17-dione
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid
alpha-hexachlorocyclohexane
bromochloromethane (Halon 1011)
bromomethane
Butylated Hydroxyanisole
chlorate
chlorodifluoromethane (HCFC-22)
chloromethane
chlorpyrifos
chromium
chromium-6
cobalt
dimethipin
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate
equilin
estriol
estrone
ethoprop
Germanium
HAA5 (five regulated haloacetic acids)
HAA6Br (six brominated haloacetic acids)
HAA9 (nine haloacetic acids)
hexafluoropropylene oxide dimer acid (GenX)
lithium
Manganese
methyl-tertiary-butyl-ether (MTBE)
molinate
molybdenum
N-ethyl perfluorooctanesulfonamidoacetic acid
N-methyl perfluorooctanesulfonamidoacetic acid
nitrobenzene
nonafluoro-3,6-dioxaheptanoic acid
o-toluidine
oxyfluorfen
perchlorate
perfluoro(2-ethoxyethane)sulfonic acid
perfluoro-3-methoxypropanoic acid
perfluoro-4-methoxybutanoic acid
perfluorobutanesulfonic acid
perfluorobutanoic acid
perfluorodecanoic acid
perfluorododecanoic acid
perfluoroheptanesulfonic acid
perfluoroheptanoic acid
perfluorohexanesulfonic acid
perfluorohexanoic acid
perfluorononanoic acid
perfluorooctanesulfonic acid
perfluorooctanoic acid
perfluoropentanesulfonic acid
perfluoropentanoic acid
perfluorotetradecanoic acid
perfluorotridecanoic acid
perfluoroundecanoic acid
profenofos
quinoline
s-ethyl-dipropylthiocarbamate (EPTC)
strontium
tebuconazole
terbacil
testosterone
Total Permethrin
tribufos
vanadium

1,1-dichloroethane (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

0.31 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.28 µg/L

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

0.061 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.031 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

1,2,3-trichloropropane (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

1,3-butadiene (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.1 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.1 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.1 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.1 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

1,4-dioxane (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

0.84 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.77 µg/L

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

0.39 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.32 µg/L

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

0.74 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.67 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

0.74 µg/L

⚠️ Exceeds Reporting Level of 0.07 µg/L by 0.67 µg/L

8/21/2014

11 years ago

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

Contaminant Details

1-butanol (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<2 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<2 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<2 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<2 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

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

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.005 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

17-alpha-ethynylestradiol (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0009 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0009 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0009 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0009 µg/L

Below Reporting Level

8/21/2014

11 years ago

Minimum Reporting Level: 0.0009 µg/L
Reference Level: ?

Contaminant Details

17-beta-estradiol (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0004 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0004 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0004 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0004 µg/L

Below Reporting Level

8/21/2014

11 years ago

Minimum Reporting Level: 0.0004 µg/L
Reference Level: ?

Contaminant Details

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

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.005 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

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

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

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

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.005 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

2,4-dinitrotoluene (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<2 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<2 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

2,6-dinitrotoluene (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<2 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<2 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

2-methoxyethanol (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.4 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.4 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.4 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.4 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.5 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.5 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.5 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.5 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<0.8 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<0.8 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<0.8 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<0.8 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<0.8 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

4,8-dioxa-3H-perfluorononanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

4-androstene-3,17-dione (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0003 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0003 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0003 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0003 µg/L

Below Reporting Level

8/21/2014

11 years ago

Minimum Reporting Level: 0.0003 µg/L
Reference Level: ?

Contaminant Details

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

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.002 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

alpha-hexachlorocyclohexane (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.01 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.01 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.01 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.01 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

bromochloromethane (Halon 1011) (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.06 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.06 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.06 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.06 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

bromomethane (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

Butylated Hydroxyanisole (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

chlorate (6)

3600 W. Ramona Bl.

Distribution System ℹ️

61 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 41 µg/L

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

55 µg/L

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

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

35 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 15 µg/L

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

98 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 78 µg/L

8/21/2014

11 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

67 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 47 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

59 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 39 µg/L

8/21/2014

11 years ago

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

Contaminant Details

chlorodifluoromethane (HCFC-22) (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.08 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.08 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.08 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.08 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

chloromethane (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

chlorpyrifos (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

chromium (6)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

4.5 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.3 µg/L

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

3.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.5 µg/L

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

3.4 µg/L

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

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

3.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3 µg/L

8/21/2014

11 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

2.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.5 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

2.3 µg/L

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

8/21/2014

11 years ago

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

Contaminant Details

chromium-6 (6)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

4.5 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 4.47 µg/L

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

3.8 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 3.77 µg/L

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

2.8 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 2.77 µg/L

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

2.7 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 2.67 µg/L

8/21/2014

11 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

2.6 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 2.57 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

1.9 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 1.87 µg/L

8/21/2014

11 years ago

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

Contaminant Details

cobalt (6)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<1 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<1 µg/L

Below Reporting Level

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

<1 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<1 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<1 µg/L

Below Reporting Level

8/21/2014

11 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

<1 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

dimethipin (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<1 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<1 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<1 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<1 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<1 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

equilin (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.004 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.004 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

estriol (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0008 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0008 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0008 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0008 µg/L

Below Reporting Level

8/21/2014

11 years ago

Minimum Reporting Level: 0.0008 µg/L
Reference Level: ?

Contaminant Details

estrone (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.002 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.002 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.002 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.002 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

ethoprop (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

Germanium (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.3 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.3 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.3 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.3 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

HAA5 (five regulated haloacetic acids) (8)

479 Casuda Canyon Dr - STG 2 DBP

Distribution System - DBP ℹ️

1.1 µg/L

Meets Reporting Threshold

7/31/2019

6 years ago

827 Ridgecrest St - STG 2 DBP

Distribution System - DBP ℹ️

1 µg/L

Meets Reporting Threshold

7/31/2019

6 years ago

3600 W. Ramona Blvd - STG 2 DBP

Distribution System - DBP ℹ️

0.93 µg/L

Meets Reporting Threshold

7/31/2019

6 years ago

1140 Branham St - STG 2 DBP

Distribution System - DBP ℹ️

0.6 µg/L

Meets Reporting Threshold

7/31/2019

6 years ago

3600 W. Ramona Blvd - STG 2 DBP

Distribution System - DBP ℹ️

0.55 µg/L

Meets Reporting Threshold

1/18/2019

6 years ago

1140 Branham St - STG 2 DBP

Distribution System - DBP ℹ️

0.44 µg/L

Meets Reporting Threshold

1/18/2019

6 years ago

479 Casuda Canyon Dr - STG 2 DBP

Distribution System - DBP ℹ️

0.42 µg/L

Meets Reporting Threshold

1/18/2019

6 years ago

827 Ridgecrest St - STG 2 DBP

Distribution System - DBP ℹ️

0.35 µg/L

Meets Reporting Threshold

1/18/2019

6 years ago

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

Contaminant Details

HAA6Br (six brominated haloacetic acids) (8)

827 Ridgecrest St - STG 2 DBP

Distribution System - DBP ℹ️

1.68 µg/L

7/31/2019

6 years ago

3600 W. Ramona Blvd - STG 2 DBP

Distribution System - DBP ℹ️

1.58 µg/L

7/31/2019

6 years ago

479 Casuda Canyon Dr - STG 2 DBP

Distribution System - DBP ℹ️

1.41 µg/L

7/31/2019

6 years ago

1140 Branham St - STG 2 DBP

Distribution System - DBP ℹ️

0.6 µg/L

7/31/2019

6 years ago

3600 W. Ramona Blvd - STG 2 DBP

Distribution System - DBP ℹ️

0.55 µg/L

1/18/2019

6 years ago

1140 Branham St - STG 2 DBP

Distribution System - DBP ℹ️

0.44 µg/L

1/18/2019

6 years ago

479 Casuda Canyon Dr - STG 2 DBP

Distribution System - DBP ℹ️

0.42 µg/L

1/18/2019

6 years ago

827 Ridgecrest St - STG 2 DBP

Distribution System - DBP ℹ️

0.35 µg/L

1/18/2019

6 years ago

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

Contaminant Details

HAA9 (nine haloacetic acids) (8)

827 Ridgecrest St - STG 2 DBP

Distribution System - DBP ℹ️

1.68 µg/L

7/31/2019

6 years ago

3600 W. Ramona Blvd - STG 2 DBP

Distribution System - DBP ℹ️

1.58 µg/L

7/31/2019

6 years ago

479 Casuda Canyon Dr - STG 2 DBP

Distribution System - DBP ℹ️

1.41 µg/L

7/31/2019

6 years ago

1140 Branham St - STG 2 DBP

Distribution System - DBP ℹ️

0.6 µg/L

7/31/2019

6 years ago

3600 W. Ramona Blvd - STG 2 DBP

Distribution System - DBP ℹ️

0.55 µg/L

1/18/2019

6 years ago

1140 Branham St - STG 2 DBP

Distribution System - DBP ℹ️

0.44 µg/L

1/18/2019

6 years ago

479 Casuda Canyon Dr - STG 2 DBP

Distribution System - DBP ℹ️

0.42 µg/L

1/18/2019

6 years ago

827 Ridgecrest St - STG 2 DBP

Distribution System - DBP ℹ️

0.35 µg/L

1/18/2019

6 years ago

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

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.005 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

lithium (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<9 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

Manganese (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

1.7 µg/L

Meets Reporting Threshold

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.4 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

0.78 µg/L

Meets Reporting Threshold

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.4 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<5 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<5 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<5 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<5 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<5 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

molinate (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<0.9 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<0.9 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<0.9 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<0.9 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<0.9 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

molybdenum (6)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

7.7 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 6.7 µg/L

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

6.4 µg/L

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

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

5.1 µg/L

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

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

5.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 4.5 µg/L

8/21/2014

11 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

5.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 4.4 µg/L

8/21/2014

11 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

5.1 µg/L

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

8/21/2014

11 years ago

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

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.005 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.006 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

nitrobenzene (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<10 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<10 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<10 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<10 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<10 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

o-toluidine (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.007 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.007 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.007 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.007 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

oxyfluorfen (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.05 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.05 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.05 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.05 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

perchlorate (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<4 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<4 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<4 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<4 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<4 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluoro-3-methoxypropanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluoro-4-methoxybutanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluorobutanesulfonic acid (5)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.09 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.09 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.09 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.09 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

perfluorobutanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

0.0072 µg/L

⚠️ Exceeds Reporting Level of 0.005 µg/L by 0.0022 µg/L

9/16/2024

11 months ago

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

Contaminant Details

perfluorodecanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluorododecanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluoroheptanesulfonic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluoroheptanoic acid (5)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.01 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.01 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.01 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.01 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

perfluorohexanesulfonic acid (5)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.03 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.03 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

perfluorohexanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluorononanoic acid (5)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

9/16/2024

11 months ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.02 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.02 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

perfluorooctanesulfonic acid (5)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

9/16/2024

11 months ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.04 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.04 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.04 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.04 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

perfluorooctanoic acid (5)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

9/16/2024

11 months ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.02 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.02 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

8/21/2014

11 years ago

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

Contaminant Details

perfluoropentanesulfonic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.004 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluoropentanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.003 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluorotetradecanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.008 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluorotridecanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.007 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

perfluoroundecanoic acid (1)

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.002 µg/L

Below Reporting Level

9/16/2024

11 months ago

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

Contaminant Details

profenofos (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.3 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.3 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.3 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.3 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

quinoline (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.02 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.02 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.02 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<1 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<1 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<1 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<1 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<1 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

strontium (6)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

530 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 529.7 µg/L

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

410 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 409.7 µg/L

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

380 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 379.7 µg/L

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

570 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 569.7 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

560 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 559.7 µg/L

8/21/2014

11 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

550 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 549.7 µg/L

8/21/2014

11 years ago

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

Contaminant Details

tebuconazole (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.2 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.2 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

terbacil (5)

WELL 05 GAC COMBINE G19/092-VOACC

WELL 05 GAC COMBINED EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

9/30/2003

21 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

11/5/2002

22 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<2 µg/L

Below Reporting Level

11/5/2002

22 years ago

DELTA PLANT EFFLUENT

DELTA PLANT EFFLUENT ℹ️

<2 µg/L

Below Reporting Level

5/6/2002

23 years ago

LALOMA RESERVOIR

LALOMA RESERVOIR ℹ️

<2 µg/L

Below Reporting Level

5/6/2002

23 years ago

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

Contaminant Details

testosterone (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0001 µg/L

Below Reporting Level

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0001 µg/L

Below Reporting Level

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.0001 µg/L

Below Reporting Level

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.0001 µg/L

Below Reporting Level

8/21/2014

11 years ago

Minimum Reporting Level: 0.0001 µg/L
Reference Level: ?

Contaminant Details

Total Permethrin (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.04 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.04 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.04 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.04 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

tribufos (4)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.07 µg/L

Below Reporting Level

7/31/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.07 µg/L

Below Reporting Level

7/31/2019

6 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

<0.07 µg/L

Below Reporting Level

1/18/2019

6 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

<0.07 µg/L

Below Reporting Level

1/18/2019

6 years ago

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

Contaminant Details

vanadium (6)

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

4.8 µg/L

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

2/26/2015

10 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.8 µg/L

2/26/2015

10 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.8 µg/L

2/26/2015

10 years ago

922 E. Graves Ave. (Well 5)

System Sample Site ℹ️

4.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.5 µg/L

8/21/2014

11 years ago

EP #68 - Delta Settling Tanks Effluent

Delta Settling Tanks ℹ️

4.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.9 µg/L

8/21/2014

11 years ago

3600 W. Ramona Bl.

Distribution System ℹ️

2.8 µg/L

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

8/21/2014

11 years ago

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

Contaminant Details

Sampling Facilities

Delta Settling Tanks
Ground Water (GW)

EP #68 - Delta Settling Tanks EffluentEntry Point to the Distribution System (EP)

System Sample Site
Ground Water (GW)

922 E. Graves Ave. (Well 5)Entry Point to the Distribution System (EP)

Distribution System - DBP
Ground Water (GW)

3600 W. Ramona Blvd - STG 2 DBPDistribution System (DS)

Distribution System - DBP
Ground Water (GW)

827 Ridgecrest St - STG 2 DBPDistribution System (DS)

Distribution System - DBP
Ground Water (GW)

1140 Branham St - STG 2 DBPDistribution System (DS)

Distribution System - DBP
Ground Water (GW)

479 Casuda Canyon Dr - STG 2 DBPDistribution System (DS)

Distribution System
Ground Water (GW)

3600 W. Ramona Bl.Maximum Residence Time (MR)

1980 CLOVER DR. - SYSTEM SAMPLE SITE
Ground Water (GW)

1980 Clover Dr. (DSMRT)Maximum Residence Time (MR)

WELL 05 GAC COMBINED EFFLUENT
Ground Water (GW)

WELL 05 GAC COMBINE G19/092-VOACCEntry Point to the Distribution System (EP)

DELTA PLANT EFFLUENT
Ground Water (GW)

DELTA PLANT EFFLUENTEntry Point to the Distribution System (EP)

LALOMA RESERVOIR
Ground Water (GW)

LALOMA RESERVOIREntry Point to the Distribution System (EP)

FAQ

Is City of Monterey Park Water Dept. tap water safe to drink?

When was City of Monterey Park Water Dept. last tested for water contamination?

The latest water samples were taken on September 16th, 2024.