MONTARA WATER AND SANITARY DISTRICT (CA) Water Quality

MONTARA WATER AND SANITARY DISTRICT is a small public water system in EPA region 9 that provides tap water for the 94037, 94038 zip codes. It has 14 facilities where the water supply was tested for 47 chemical contaminants that impact tap water quality and human health.

The maximum reported level of Manganese was 3550 µg/L. Some (1 of 23 or 4%) of the latest water samples showed levels of Manganese that were at or above unsafe concentration levels. There were 1 contamintants found in the MONTARA WATER AND SANITARY DISTRICT water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.

Table of Contents
Contaminants
Facilities
FAQ

Contaminants

Jump To Contaminant
1,1-dichloroethane (17)
1,2,3-trichloropropane (17)
1,3-butadiene (17)
1,4-dioxane (17)
11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (3)
1H,1H,2H,2H-perfluorodecane sulfonic acid (3)
1H,1H,2H,2H-perfluorohexane sulfonic acid (3)
1H,1H,2H,2H-perfluorooctane sulfonic acid (3)
4,8-dioxa-3H-perfluorononanoic acid (3)
9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (3)
bromochloromethane (Halon 1011) (17)
bromomethane (17)
chlorate (23)
chlorodifluoromethane (HCFC-22) (17)
chloromethane (17)
chromium (23)
chromium-6 (23)
cobalt (23)
Germanium (23)
hexafluoropropylene oxide dimer acid (GenX) (3)
lithium (3)
Manganese (23)
molybdenum (23)
N-ethyl perfluorooctanesulfonamidoacetic acid (3)
N-methyl perfluorooctanesulfonamidoacetic acid (3)
nonafluoro-3,6-dioxaheptanoic acid (3)
perfluoro(2-ethoxyethane)sulfonic acid (3)
perfluoro-3-methoxypropanoic acid (3)
perfluoro-4-methoxybutanoic acid (3)
perfluorobutanesulfonic acid (20)
perfluorobutanoic acid (3)
perfluorodecanoic acid (3)
perfluorododecanoic acid (3)
perfluoroheptanesulfonic acid (3)
perfluoroheptanoic acid (20)
perfluorohexanesulfonic acid (20)
perfluorohexanoic acid (3)
perfluorononanoic acid (20)
perfluorooctanesulfonic acid (20)
perfluorooctanoic acid (20)
perfluoropentanesulfonic acid (3)
perfluoropentanoic acid (3)
perfluorotetradecanoic acid (3)
perfluorotridecanoic acid (3)
perfluoroundecanoic acid (3)
strontium (23)
vanadium (23)

1,1-dichloroethane (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

1,2,3-trichloropropane (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

1,3-butadiene (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.1 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.1 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.1 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

1,4-dioxane (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.07 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.07 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.07 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.07 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.07 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.07 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.07 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

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

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorodecane sulfonic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorohexane sulfonic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

1H,1H,2H,2H-perfluorooctane sulfonic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

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

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

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

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.002 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.002 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.002 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

bromochloromethane (Halon 1011) (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.06 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.06 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.06 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.06 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.06 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.06 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.06 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

bromomethane (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

chlorate (23)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

160 µg/L

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

10/19/2015

9 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

86.2 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 66.2 µg/L

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

29.6 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 9.6 µg/L

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

122 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 102 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

72.2 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 52.2 µg/L

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

68.1 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 48.1 µg/L

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

52.8 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 32.8 µg/L

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

44.1 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 24.1 µg/L

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

38 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 18 µg/L

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<20 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

140 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 120 µg/L

4/21/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

57 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 37 µg/L

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<20 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

89.6 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 69.6 µg/L

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

71.9 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 51.9 µg/L

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

41.1 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 21.1 µg/L

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

40.4 µg/L

⚠️ Exceeds Reporting Level of 20 µg/L by 20.4 µg/L

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<20 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<20 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<20 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<20 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<20 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<20 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

chlorodifluoromethane (HCFC-22) (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.08 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.08 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.08 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.08 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.08 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.08 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.08 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

chloromethane (17)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

chromium (23)

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.222 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.022 µg/L

10/19/2015

9 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

7/21/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

35.8 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 35.6 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.352 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.152 µg/L

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<0.2 µg/L

Below Reporting Level

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.28 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.08 µg/L

4/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.2 µg/L

Below Reporting Level

2/18/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

39.6 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 39.4 µg/L

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

9.73 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 9.53 µg/L

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

0.435 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.235 µg/L

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

chromium-6 (23)

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.294 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.264 µg/L

10/19/2015

9 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

0.0508 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0208 µg/L

7/21/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.477 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.447 µg/L

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

0.0671 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0371 µg/L

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.24 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.21 µg/L

4/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/18/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

0.192 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.162 µg/L

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

0.109 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.079 µg/L

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

0.0588 µg/L

⚠️ Exceeds Reporting Level of 0.03 µg/L by 0.0288 µg/L

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

cobalt (23)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

10/19/2015

9 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<1 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

4/21/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<1 µg/L

Below Reporting Level

2/18/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

2.25 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.25 µg/L

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

Germanium (23)

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

10/19/2015

9 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<1 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

4/21/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<1 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

hexafluoropropylene oxide dimer acid (GenX) (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

lithium (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<9 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<9 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<9 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

Manganese (23)

1001 Ocean Blvd.

Distribution System - MX ℹ️

1.22 µg/L

Meets Reporting Threshold

10/19/2015

9 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

27.9 µg/L

Meets Reporting Threshold

7/21/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

159 µg/L

⚠️ Exceeds 50% of Reference Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

3.67 µg/L

Meets Reporting Threshold

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

5.7 µg/L

Meets Reporting Threshold

4/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

221 µg/L

⚠️ Exceeds 50% of Reference Level

2/18/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

3550 µg/L

☠️ Exceeds Reference Level by 3250 µg/L

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

132 µg/L

Meets Reporting Threshold

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

72 µg/L

Meets Reporting Threshold

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

12.5 µg/L

Meets Reporting Threshold

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

12.2 µg/L

Meets Reporting Threshold

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

6 µg/L

Meets Reporting Threshold

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

<1 µg/L

Below Reporting Level

1/20/2015

10 years ago

Minimum Reporting Level: 1 µg/L
Reference Level: 300 µg/L

Contaminant Details

molybdenum (23)

1001 Ocean Blvd.

Distribution System - MX ℹ️

25.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 24.3 µg/L

10/19/2015

9 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

8.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 7.6 µg/L

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

2.48 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.48 µg/L

7/21/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

31.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 30.3 µg/L

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

26.5 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 25.5 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

25.2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 24.2 µg/L

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

23.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 22.4 µg/L

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

17.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 16.6 µg/L

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

6.59 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 5.59 µg/L

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

1.28 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.28 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

20 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 19 µg/L

4/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

7.1 µg/L

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

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<1 µg/L

Below Reporting Level

2/18/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

37.9 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 36.9 µg/L

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

28.1 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 27.1 µg/L

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

25.2 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 24.2 µg/L

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

18.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 17.6 µg/L

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

15.6 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 14.6 µg/L

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

14.4 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 13.4 µg/L

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

7 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 6 µg/L

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

2.45 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.45 µg/L

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

2.3 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 1.3 µg/L

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

1.53 µg/L

⚠️ Exceeds Reporting Level of 1 µg/L by 0.53 µg/L

1/20/2015

10 years ago

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

Contaminant Details

N-ethyl perfluorooctanesulfonamidoacetic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

N-methyl perfluorooctanesulfonamidoacetic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.006 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.006 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.006 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

nonafluoro-3,6-dioxaheptanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.02 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.02 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.02 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoro(2-ethoxyethane)sulfonic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoro-3-methoxypropanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoro-4-methoxybutanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluorobutanesulfonic acid (20)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.09 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.09 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.09 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.09 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.09 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.09 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.09 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

perfluorobutanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.005 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.005 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluorodecanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluorododecanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoroheptanesulfonic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoroheptanoic acid (20)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.01 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.01 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.01 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.01 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.01 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.01 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.01 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

perfluorohexanesulfonic acid (20)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.03 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.03 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

perfluorohexanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluorononanoic acid (20)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/11/2025

7 months ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.02 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

perfluorooctanesulfonic acid (20)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/11/2025

7 months ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.04 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.04 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.04 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.04 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.04 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.04 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.04 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

perfluorooctanoic acid (20)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/11/2025

7 months ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.02 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.02 µg/L

Below Reporting Level

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

<0.02 µg/L

Below Reporting Level

2/18/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.02 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

perfluoropentanesulfonic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.004 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.004 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoropentanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.003 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.003 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluorotetradecanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.008 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.008 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.008 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluorotridecanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.007 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.007 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.007 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

perfluoroundecanoic acid (3)

Portola 3 Well Post Treatment Sample Tap

Portola 3 Well ℹ️

<0.002 µg/L

Below Reporting Level

2/12/2025

7 months ago

Alta Vista Well Post Treatment Sample Tap

Alta Vista Well ℹ️

<0.002 µg/L

Below Reporting Level

2/12/2025

7 months ago

Wagner 03 Well Post Treatment Sample Tap

Wagner 03 Well ℹ️

<0.002 µg/L

Below Reporting Level

2/11/2025

7 months ago

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

Contaminant Details

strontium (23)

1001 Ocean Blvd.

Distribution System - MX ℹ️

73.9 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 73.6 µg/L

10/19/2015

9 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

26.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 26.1 µg/L

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

202 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 201.7 µg/L

7/21/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

78.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 78.1 µg/L

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

69.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 68.8 µg/L

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

60.9 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 60.6 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

59.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 59.4 µg/L

7/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

42.6 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 42.3 µg/L

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

39.1 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 38.8 µg/L

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

20.5 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 20.2 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

94 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 93.7 µg/L

4/21/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

23 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 22.7 µg/L

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

284 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 283.7 µg/L

2/18/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

296 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 295.7 µg/L

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

274 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 273.7 µg/L

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

114 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 113.7 µg/L

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

96.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 96.4 µg/L

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

78.9 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 78.6 µg/L

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

53.7 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 53.4 µg/L

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

51.9 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 51.6 µg/L

1/20/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

46.4 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 46.1 µg/L

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

44 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 43.7 µg/L

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

23.8 µg/L

⚠️ Exceeds Reporting Level of 0.3 µg/L by 23.5 µg/L

1/20/2015

10 years ago

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

Contaminant Details

vanadium (23)

1001 Ocean Blvd.

Distribution System - MX ℹ️

2.19 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.99 µg/L

10/19/2015

9 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

1.51 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.31 µg/L

10/19/2015

9 years ago

North Airport Wellhead

North Airport Well ℹ️

<0.2 µg/L

Below Reporting Level

7/21/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

4.94 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.74 µg/L

7/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

4.22 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.02 µg/L

7/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

2.3 µg/L

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

7/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

1.91 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.71 µg/L

7/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

1.53 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.33 µg/L

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

1.42 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.22 µg/L

7/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

0.204 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.004 µg/L

7/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

1.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.2 µg/L

4/21/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

1.4 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.2 µg/L

4/21/2015

10 years ago

Airport Well #3 Wellhead

Airport Well #3 ℹ️

0.544 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.344 µg/L

2/18/2015

10 years ago

Alta Vista Wellhead

Alta Vista Well ℹ️

5.18 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.98 µg/L

1/20/2015

10 years ago

820 Alta Vista Rd.

Distribution System - GW ℹ️

4.54 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 4.34 µg/L

1/20/2015

10 years ago

Portola #4 Wellhead

Portola #4 Well ℹ️

3.32 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 3.12 µg/L

1/20/2015

10 years ago

Portola #1 Wellhead

Portola #1 Well ℹ️

3.09 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 2.89 µg/L

1/20/2015

10 years ago

South Airport Wellhead

South Airport Well ℹ️

1.61 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.41 µg/L

1/20/2015

10 years ago

1001 Ocean Blvd.

Distribution System - MX ℹ️

1.51 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.31 µg/L

1/20/2015

10 years ago

Alta Vista TP Effluent

Alta Vista Treatment Plant ℹ️

1.27 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 1.07 µg/L

1/20/2015

10 years ago

Sample Tap post Treatment

Wagner & Drake Wells ℹ️

0.83 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.63 µg/L

1/20/2015

10 years ago

North Airport Wellhead

North Airport Well ℹ️

0.491 µg/L

⚠️ Exceeds Reporting Level of 0.2 µg/L by 0.291 µg/L

1/20/2015

10 years ago

Portola #3 Wellhead

Portola #3 Well ℹ️

<0.2 µg/L

Below Reporting Level

1/20/2015

10 years ago

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

Contaminant Details

Sampling Facilities

Portola 3 Well
Ground Water (GW)

Portola 3 Well Post Treatment Sample TapEntry Point to the Distribution System (EP)

Wagner 03 Well
Ground Water (GW)

Wagner 03 Well Post Treatment Sample TapEntry Point to the Distribution System (EP)

Alta Vista Well
Multiple Sources (MX)

Alta Vista Well Post Treatment Sample TapEntry Point to the Distribution System (EP)

Alta Vista Treatment Plant
Surface Water (SW)

Alta Vista TP EffluentEntry Point to the Distribution System (EP)

Alta Vista Well
Ground Water (GW)

Alta Vista WellheadEntry Point to the Distribution System (EP)

Wagner & Drake Wells
Ground Water (GW)

Sample Tap post TreatmentEntry Point to the Distribution System (EP)

Portola #1 Well
Ground Water (GW)

Portola #1 WellheadEntry Point to the Distribution System (EP)

Portola #3 Well
Ground Water (GW)

Portola #3 WellheadEntry Point to the Distribution System (EP)

Portola #4 Well
Ground Water (GW)

Portola #4 WellheadEntry Point to the Distribution System (EP)

South Airport Well
Ground Water (GW)

South Airport WellheadEntry Point to the Distribution System (EP)

North Airport Well
Ground Water (GW)

North Airport WellheadEntry Point to the Distribution System (EP)

Airport Well #3
Ground Water (GW)

Airport Well #3 WellheadEntry Point to the Distribution System (EP)

Distribution System - MX
Multiple Sources (MX)

1001 Ocean Blvd.Maximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

820 Alta Vista Rd.Maximum Residence Time (MR)

FAQ

Is MONTARA WATER AND SANITARY DISTRICT tap water safe to drink?

When was MONTARA WATER AND SANITARY DISTRICT last tested for water contamination?

The latest water samples were taken on February 12th, 2025.

Contaminants

1,1-dichloroethane (17)

1,2,3-trichloropropane (17)

1,3-butadiene (17)

1,4-dioxane (17)

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

1H,1H,2H,2H-perfluorodecane sulfonic acid (3)

1H,1H,2H,2H-perfluorohexane sulfonic acid (3)

1H,1H,2H,2H-perfluorooctane sulfonic acid (3)

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

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

bromochloromethane (Halon 1011) (17)

bromomethane (17)

chlorate (23)

chlorodifluoromethane (HCFC-22) (17)

chloromethane (17)

chromium (23)

chromium-6 (23)

cobalt (23)

Germanium (23)

hexafluoropropylene oxide dimer acid (GenX) (3)

lithium (3)

Manganese (23)

molybdenum (23)

N-ethyl perfluorooctanesulfonamidoacetic acid (3)

N-methyl perfluorooctanesulfonamidoacetic acid (3)

nonafluoro-3,6-dioxaheptanoic acid (3)

perfluoro(2-ethoxyethane)sulfonic acid (3)

perfluoro-3-methoxypropanoic acid (3)

perfluoro-4-methoxybutanoic acid (3)

perfluorobutanesulfonic acid (20)

perfluorobutanoic acid (3)

perfluorodecanoic acid (3)

perfluorododecanoic acid (3)

perfluoroheptanesulfonic acid (3)

perfluoroheptanoic acid (20)

perfluorohexanesulfonic acid (20)

perfluorohexanoic acid (3)

perfluorononanoic acid (20)

perfluorooctanesulfonic acid (20)

perfluorooctanoic acid (20)

perfluoropentanesulfonic acid (3)

perfluoropentanoic acid (3)

perfluorotetradecanoic acid (3)

perfluorotridecanoic acid (3)

perfluoroundecanoic acid (3)

strontium (23)

vanadium (23)

Sampling Facilities

Portola 3 Well Ground Water (GW)

Wagner 03 Well Ground Water (GW)

Alta Vista Well Multiple Sources (MX)

Alta Vista Treatment Plant Surface Water (SW)

Alta Vista Well Ground Water (GW)

Wagner & Drake Wells Ground Water (GW)

Portola #1 Well Ground Water (GW)

Portola #3 Well Ground Water (GW)

Portola #4 Well Ground Water (GW)

South Airport Well Ground Water (GW)

North Airport Well Ground Water (GW)

Airport Well #3 Ground Water (GW)

Distribution System - MX Multiple Sources (MX)

Distribution System - GW Ground Water (GW)

FAQ

Is MONTARA WATER AND SANITARY DISTRICT tap water safe to drink?

When was MONTARA WATER AND SANITARY DISTRICT last tested for water contamination?

Portola 3 Well
Ground Water (GW)

Wagner 03 Well
Ground Water (GW)

Alta Vista Well
Multiple Sources (MX)

Alta Vista Treatment Plant
Surface Water (SW)

Alta Vista Well
Ground Water (GW)

Wagner & Drake Wells
Ground Water (GW)

Portola #1 Well
Ground Water (GW)

Portola #3 Well
Ground Water (GW)

Portola #4 Well
Ground Water (GW)

South Airport Well
Ground Water (GW)

North Airport Well
Ground Water (GW)

Airport Well #3
Ground Water (GW)

Distribution System - MX
Multiple Sources (MX)

Distribution System - GW
Ground Water (GW)