Golden State Water Company - Bay Point (CA) Water Quality

Golden State Water Company - Bay Point is a large public water system in EPA region 9 that provides tap water for the 94565 zip codes. It has 10 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 7.76 µg/L. The maximum reported level of Manganese was 97 µg/L. There were 2 contamintants found in the Golden State Water Company - Bay Point water supply at levels that were above the minimum reporting level.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane (6)
1,2,3-trichloropropane (6)
1,3-butadiene (6)
1,4-dioxane (6)
1-butanol (6)
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (4)
1H,1H,2H,2H-perfluorodecane sulfonic acid (4)
1H,1H,2H,2H-perfluorohexane sulfonic acid (4)
1H,1H,2H,2H-perfluorooctane sulfonic acid (4)
2,4-dinitrotoluene (11)
2,6-dinitrotoluene (11)
2-methoxyethanol (6)
2-propen-1-ol (Allyl Alcohol) (6)
4,4'-dichloro dichlorophenyl ethylene (DDE) (11)
4,8-dioxa-3H-perfluorononanoic acid (4)
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (4)
alpha-hexachlorocyclohexane (6)
anatoxin-a (8)
bromochloromethane (Halon 1011) (6)
bromomethane (6)
Butylated Hydroxyanisole (6)
chlorate (12)
chlorodifluoromethane (HCFC-22) (6)
chloromethane (6)
chlorpyrifos (6)
chromium (12)
chromium-6 (12)
cobalt (12)
cylindrospermopsin (8)
dimethipin (6)
dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (11)
ethoprop (6)
Germanium (6)
HAA5 (five regulated haloacetic acids) (9)
HAA6Br (six brominated haloacetic acids) (9)
HAA9 (nine haloacetic acids) (9)
hexafluoropropylene oxide dimer acid (GenX) (4)
lithium (4)
Manganese (6)
methyl-tertiary-butyl-ether (MTBE) (10)
molinate (11)
molybdenum (12)
N-ethyl perfluorooctanesulfonamidoacetic acid (4)
N-methyl perfluorooctanesulfonamidoacetic acid (4)
nitrobenzene (10)
nonafluoro-3,6-dioxaheptanoic acid (4)
o-toluidine (6)
oxyfluorfen (6)
perchlorate (10)
perfluoro(2-ethoxyethane)sulfonic acid (4)
perfluoro-3-methoxypropanoic acid (4)
perfluoro-4-methoxybutanoic acid (4)
perfluorobutanesulfonic acid (10)
perfluorobutanoic acid (4)
perfluorodecanoic acid (4)
perfluorododecanoic acid (4)
perfluoroheptanesulfonic acid (4)
perfluoroheptanoic acid (10)
perfluorohexanesulfonic acid (10)
perfluorohexanoic acid (4)
perfluorononanoic acid (10)
perfluorooctanesulfonic acid (10)
perfluorooctanoic acid (10)
perfluoropentanesulfonic acid (4)
perfluoropentanoic acid (4)
perfluorotetradecanoic acid (4)
perfluorotridecanoic acid (4)
perfluoroundecanoic acid (4)
profenofos (6)
quinoline (6)
s-ethyl-dipropylthiocarbamate (EPTC) (11)
strontium (12)
tebuconazole (6)
terbacil (11)
total microcystins (8)
Total Permethrin (6)
tribufos (6)
vanadium (12)

1,1-dichloroethane (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

1,2,3-trichloropropane (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

1,3-butadiene (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.1 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.1 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.1 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.1 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.1 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

1,4-dioxane (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.07 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.07 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

1-butanol (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<2 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<2 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<2 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<2 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<2 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<2 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

2,4-dinitrotoluene (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

2,6-dinitrotoluene (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

2-methoxyethanol (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.4 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.4 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.4 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.4 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.4 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.4 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

2-propen-1-ol (Allyl Alcohol) (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.5 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.5 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.5 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.5 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.5 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.5 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

4,4'-dichloro dichlorophenyl ethylene (DDE) (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<0.8 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<0.8 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.8 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<0.8 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.8 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<0.8 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<0.8 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.8 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<0.8 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.8 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.8 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

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

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

alpha-hexachlorocyclohexane (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.01 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.01 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

anatoxin-a (8)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

10/16/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

10/2/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/18/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

9/4/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/28/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/17/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/2/2018

7 years ago

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

Contaminant Details

bromochloromethane (Halon 1011) (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.094 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.034 µg/L

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.069 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.009 µg/L

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.06 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.06 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.084 µg/L

⚠️ Exceeds Reporting Level of 0.06 µg/L by 0.024 µg/L

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.06 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

bromomethane (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

Butylated Hydroxyanisole (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

12/19/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

chlorate (12)

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

86 µg/L

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

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<20 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

44 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 24 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<20 µg/L

Below Reporting Level

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<20 µg/L

Below Reporting Level

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

<20 µg/L

Below Reporting Level

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

100 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 80 µg/L

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

75 µg/L

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

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

65 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 45 µg/L

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

46 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 26 µg/L

8/20/2013

12 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<20 µg/L

Below Reporting Level

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

<20 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

chlorodifluoromethane (HCFC-22) (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.08 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.08 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.08 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.08 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.08 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.08 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

chloromethane (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

chlorpyrifos (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

chromium (12)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<0.2 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

4.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.7 µg/L

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.8 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.24 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.04 µg/L

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<0.2 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<0.2 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

5.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.9 µg/L

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

0.74 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.54 µg/L

8/20/2013

12 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

0.33 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.13 µg/L

8/20/2013

12 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.31 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.11 µg/L

8/20/2013

12 years ago

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

Contaminant Details

chromium-6 (12)

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

0.082 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.052 µg/L

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.076 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.046 µg/L

5/13/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

5.5 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 5.47 µg/L

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

1 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.97 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.17 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.14 µg/L

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

0.15 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.12 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.13 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.1 µg/L

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

0.12 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.09 µg/L

11/19/2013

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

5.4 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 5.37 µg/L

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

0.6 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.57 µg/L

8/20/2013

12 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

0.16 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.13 µg/L

8/20/2013

12 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

0.15 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.12 µg/L

8/20/2013

12 years ago

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

Contaminant Details

cobalt (12)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<1 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<1 µg/L

Below Reporting Level

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<1 µg/L

Below Reporting Level

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<1 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<1 µg/L

Below Reporting Level

8/20/2013

12 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

cylindrospermopsin (8)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

10/16/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

10/2/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

9/18/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

9/4/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

8/28/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

7/17/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

7/2/2018

7 years ago

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

Contaminant Details

dimethipin (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

ethoprop (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

Germanium (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.3 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.3 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

HAA5 (five regulated haloacetic acids) (9)

DS - 275 Cleveland Ave

Bay Point - Distribution System ℹ️

7.76 µg/L

Meets Reporting Threshold

5/7/2019

6 years ago

DS - 198 Sand Pointe Lane

Bay Point - Distribution System ℹ️

7.37 µg/L

Meets Reporting Threshold

5/7/2019

6 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

4.22 µg/L

Meets Reporting Threshold

5/7/2019

6 years ago

DS - 16 Sharon Drive

Bay Point - Distribution System ℹ️

4.11 µg/L

Meets Reporting Threshold

5/7/2019

6 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

6.96 µg/L

Meets Reporting Threshold

11/1/2018

6 years ago

DS - 275 Cleveland Ave

Bay Point - Distribution System ℹ️

6.8 µg/L

Meets Reporting Threshold

8/8/2018

7 years ago

DS - 198 Sand Pointe Lane

Bay Point - Distribution System ℹ️

5.9 µg/L

Meets Reporting Threshold

8/8/2018

7 years ago

DS - 16 Sharon Drive

Bay Point - Distribution System ℹ️

5.66 µg/L

Meets Reporting Threshold

8/8/2018

7 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

5.07 µg/L

Meets Reporting Threshold

8/8/2018

7 years ago

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

Contaminant Details

HAA6Br (six brominated haloacetic acids) (9)

DS - 275 Cleveland Ave

Bay Point - Distribution System ℹ️

5.31 µg/L

5/7/2019

6 years ago

DS - 198 Sand Pointe Lane

Bay Point - Distribution System ℹ️

5.15 µg/L

5/7/2019

6 years ago

DS - 16 Sharon Drive

Bay Point - Distribution System ℹ️

2.08 µg/L

5/7/2019

6 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

1.83 µg/L

5/7/2019

6 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

13 µg/L

11/1/2018

6 years ago

DS - 275 Cleveland Ave

Bay Point - Distribution System ℹ️

4.86 µg/L

8/8/2018

7 years ago

DS - 16 Sharon Drive

Bay Point - Distribution System ℹ️

2.66 µg/L

8/8/2018

7 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

2.47 µg/L

8/8/2018

7 years ago

DS - 198 Sand Pointe Lane

Bay Point - Distribution System ℹ️

1.4 µg/L

8/8/2018

7 years ago

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

Contaminant Details

HAA9 (nine haloacetic acids) (9)

DS - 275 Cleveland Ave

Bay Point - Distribution System ℹ️

11.57 µg/L

5/7/2019

6 years ago

DS - 198 Sand Pointe Lane

Bay Point - Distribution System ℹ️

11.12 µg/L

5/7/2019

6 years ago

DS - 16 Sharon Drive

Bay Point - Distribution System ℹ️

5.88 µg/L

5/7/2019

6 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

5.73 µg/L

5/7/2019

6 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

17.26 µg/L

11/1/2018

6 years ago

DS - 275 Cleveland Ave

Bay Point - Distribution System ℹ️

10.46 µg/L

8/8/2018

7 years ago

DS - 16 Sharon Drive

Bay Point - Distribution System ℹ️

7.66 µg/L

8/8/2018

7 years ago

DS - 1150 Solano Ave

Bay Point - Distribution System ℹ️

6.87 µg/L

8/8/2018

7 years ago

DS - 198 Sand Pointe Lane

Bay Point - Distribution System ℹ️

5.9 µg/L

8/8/2018

7 years ago

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

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

lithium (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<9 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<9 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<9 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<9 µg/L

Below Reporting Level

3/5/2024

18 months ago

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

Contaminant Details

Manganese (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

4.2 µg/L

Meets Reporting Threshold

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

4.8 µg/L

Meets Reporting Threshold

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

2 µg/L

Meets Reporting Threshold

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

3.1 µg/L

Meets Reporting Threshold

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

97 µg/L

Meets Reporting Threshold

8/8/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

1.5 µg/L

Meets Reporting Threshold

8/8/2018

7 years ago

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

Contaminant Details

methyl-tertiary-butyl-ether (MTBE) (10)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<5 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<5 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<5 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<5 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<5 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<5 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<5 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<5 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<5 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<5 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

molinate (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<0.9 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<0.9 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.9 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<0.9 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.9 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<0.9 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<0.9 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.9 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<0.9 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.9 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<0.9 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

molybdenum (12)

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

2 µg/L

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

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

1.8 µg/L

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

5/13/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5 µg/L

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

4.5 µg/L

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

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

4.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 3.4 µg/L

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

3.7 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 2.7 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

3.1 µg/L

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

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

2.8 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.8 µg/L

11/19/2013

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

5.9 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 4.9 µg/L

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

2.8 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.8 µg/L

8/20/2013

12 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

2.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.5 µg/L

8/20/2013

12 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

2.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.4 µg/L

8/20/2013

12 years ago

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

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/5/2024

18 months ago

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

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.006 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.006 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.006 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.006 µg/L

Below Reporting Level

3/5/2024

18 months ago

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

Contaminant Details

nitrobenzene (10)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<10 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<10 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<10 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<10 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<10 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<10 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<10 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<10 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<10 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<10 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

o-toluidine (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.007 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/19/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.007 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

oxyfluorfen (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.05 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.05 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.05 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.05 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.05 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.05 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

perchlorate (10)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<4 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<4 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<4 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<4 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<4 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<4 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<4 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<4 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<4 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<4 µg/L

Below Reporting Level

3/26/2002

23 years ago

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

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluoro-3-methoxypropanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluoro-4-methoxybutanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluorobutanesulfonic acid (10)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.09 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.09 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.09 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

perfluorobutanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.005 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluorodecanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluorododecanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluoroheptanesulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluoroheptanoic acid (10)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.01 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.01 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.01 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

perfluorohexanesulfonic acid (10)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

perfluorohexanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluorononanoic acid (10)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2024

18 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

perfluorooctanesulfonic acid (10)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2024

18 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.04 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.04 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

perfluorooctanoic acid (10)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2024

18 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

11/19/2013

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

8/20/2013

12 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

8/20/2013

12 years ago

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

Contaminant Details

perfluoropentanesulfonic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.004 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluoropentanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.003 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

perfluorotetradecanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.008 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.008 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.008 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.008 µg/L

Below Reporting Level

3/5/2024

18 months ago

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

Contaminant Details

perfluorotridecanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.007 µg/L

Below Reporting Level

3/5/2024

18 months ago

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

Contaminant Details

perfluoroundecanoic acid (4)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

12/3/2024

9 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

9/3/2024

12 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

6/12/2024

15 months ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.002 µg/L

Below Reporting Level

3/13/2024

18 months ago

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

Contaminant Details

profenofos (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.3 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.3 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

quinoline (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

12/19/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.02 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

s-ethyl-dipropylthiocarbamate (EPTC) (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<1 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<1 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<1 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

strontium (12)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

220 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 219.7 µg/L

5/13/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

220 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 219.7 µg/L

5/13/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

1300 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1299.7 µg/L

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

470 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 469.7 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

290 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 289.7 µg/L

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

260 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 259.7 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

220 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 219.7 µg/L

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

200 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 199.7 µg/L

11/19/2013

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

1300 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 1299.7 µg/L

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

280 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 279.7 µg/L

8/20/2013

12 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

170 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 169.7 µg/L

8/20/2013

12 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

170 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 169.7 µg/L

8/20/2013

12 years ago

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

Contaminant Details

tebuconazole (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.2 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

terbacil (11)

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<2 µg/L

Below Reporting Level

12/10/2002

22 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

9/10/2002

23 years ago

HILL ST. WELL 01 02N/01W-15G01

HILL ST. WELL 01 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WELL 02 0710002-004

HILL ST. WELL 02 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

CHAKWICK WELL 04

CHADWICK WELL 04 ℹ️

<2 µg/L

Below Reporting Level

6/11/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

3/27/2002

23 years ago

HILL ST. WTP - CONT 0710002-005

HILL ST. WTP - CONTRA COSTA CANAL - RAW ℹ️

<2 µg/L

Below Reporting Level

3/27/2002

23 years ago

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

Contaminant Details

total microcystins (8)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

10/16/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

10/2/2018

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

9/18/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

9/4/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

8/21/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

8/8/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

7/17/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.3 µg/L

Below Reporting Level

7/2/2018

7 years ago

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

Contaminant Details

Total Permethrin (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.04 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.04 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.04 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

tribufos (6)

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

5/7/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.07 µg/L

Below Reporting Level

2/6/2019

6 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

11/1/2018

6 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

<0.07 µg/L

Below Reporting Level

9/20/2018

7 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

<0.07 µg/L

Below Reporting Level

8/8/2018

7 years ago

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

Contaminant Details

vanadium (12)

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

3.1 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.9 µg/L

5/13/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

2.6 µg/L

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

5/13/2014

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

9.7 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.5 µg/L

2/25/2014

11 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

4.2 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4 µg/L

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

2.9 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.7 µg/L

2/25/2014

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

2.8 µg/L

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

2/25/2014

11 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

3.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.4 µg/L

11/19/2013

11 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

3.3 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.1 µg/L

11/19/2013

11 years ago

EP #6 - Chadwick Well #3 Treated

Chadwick Well #3 ℹ️

9.9 µg/L

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

8/20/2013

12 years ago

DSMRT for Chadwick Well #3: 275 Cleveland Ave

Distribution System - GW ℹ️

3.7 µg/L

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

8/20/2013

12 years ago

DSMRT for Hill St. Plant: 198 Sand Pointe Lane

Distribution System - MX ℹ️

3.2 µg/L

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

8/20/2013

12 years ago

EP #1 - Hill St. Reservoir Eff.

Hill St. Plant ℹ️

3 µg/L

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

8/20/2013

12 years ago

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

Contaminant Details

Sampling Facilities

Hill St. Plant
Multiple Sources (MX)

EP #1 - Hill St. Reservoir Eff.Entry Point to the Distribution System (EP)

Chadwick Well #3
Ground Water (GW)

EP #6 - Chadwick Well #3 TreatedEntry Point to the Distribution System (EP)

Bay Point - Distribution System
Multiple Sources (MX)

DS - 1150 Solano AveDistribution System (DS)

DS - 275 Cleveland AveDistribution System (DS)

DS - 16 Sharon DriveDistribution System (DS)

DS - 198 Sand Pointe LaneDistribution System (DS)

Distribution System - MX
Multiple Sources (MX)

DSMRT for Hill St. Plant: 198 Sand Pointe LaneMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

DSMRT for Chadwick Well #3: 275 Cleveland AveMaximum Residence Time (MR)

CCWD INTERTIE - PORT CHICAGO
Surface Water (SW)

Port Chicago IntertieEntry Point to the Distribution System (EP)

HILL ST. WELL 01
Ground Water (GW)

HILL ST. WELL 01 02N/01W-15G01SR (SR)

HILL ST. WELL 02
Ground Water (GW)

HILL ST. WELL 02 0710002-004SR (SR)

HILL ST. WTP - CONTRA COSTA CANAL - RAW
Surface Water (SW)

HILL ST. WTP - CONT 0710002-005SR (SR)

CHADWICK WELL 04
Ground Water (GW)

CHAKWICK WELL 04SR (SR)

FAQ

Is Golden State Water Company - Bay Point tap water safe to drink?

When was Golden State Water Company - Bay Point last tested for water contamination?

The latest water samples were taken on December 3rd, 2024.