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Tap water quality report

North Marin Wd - Pt. Reyes

EPA monitoring tested this supplier for 82 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

82
contaminants tested
18
detected
1,841
people served
2
health-based violations
Water source
Ground water
Ownership
Local government
Counties served
Marin

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

2
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1996-01-01 → 1996-01-31
MCL Health-based Resolved 1996-01-01 → 1996-01-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
14.48 µg/L
No EPA limit set
62/62 SYR4 2012–2019
Bromoform
92.4 µg/L
No EPA limit set
62/62 SYR4 2012–2019
Dibromochloromethane
23.65 µg/L
No EPA limit set
62/62 SYR4 2012–2019
TTHM
119.89 µg/L 150%
of the EPA limit, in the worst sample — 80 µg/L
62/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
35.1 µg/L 59%
of the EPA limit 60 µg/L
62/62 SYR4 2012–2019
Dibromoacetic Acid
28.7 µg/L
No EPA limit set
58/62 SYR4 2012–2019
Chloroform
25.27 µg/L
No EPA limit set
55/62 SYR4 2012–2019
Dichloroacetic Acid
11.8 µg/L
No EPA limit set
54/62 SYR4 2012–2019
Trichloroacetic Acid
7.8 µg/L
No EPA limit set
42/62 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
16/16 LCR 2023
Fluoride
130 µg/L 3.3%
of the EPA limit 4000 µg/L
12/15 SYR4 2012–2019
Monobromoacetic Acid
2.9 µg/L
No EPA limit set
10/62 SYR4 2012–2019
Nitrate
1830 µg/L 18%
of the EPA limit 10000 µg/L
4/74 SYR4 2012–2019
Barium
290 µg/L 14%
of the EPA limit 2000 µg/L
3/16 SYR4 2012–2018
Gross Beta Particle Activity
4.1 pCi/L
No EPA limit set
2/2 SYR4 2012–2015
Combined Radium (-226 And -228)
2.68 pCi/L 54%
of the EPA limit 5 pCi/L
1/1 SYR4 2012
Combined Uranium
0.0223 µg/L 0.1%
of the EPA limit 30 µg/L
1/2 SYR4 2012–2015
Monochloroacetic Acid
7.9 µg/L
No EPA limit set
1/62 SYR4 2012–2019
64 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WILLIAMS, TONY
Phone
415-761-8945
Email
twilliams@nmwd.com

Frequently asked questions about North Marin Wd - Pt. Reyes

Is North Marin Wd - Pt. Reyes tap water safe to drink?

EPA monitoring detected 18 contaminants in North Marin Wd - Pt. Reyes's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in North Marin Wd - Pt. Reyes's water?

EPA monitoring detected Bromodichloromethane, Bromoform, Dibromochloromethane, TTHM, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does North Marin Wd - Pt. Reyes serve?

North Marin Wd - Pt. Reyes reports serving 1,841 people in California, per its EPA record.

Has North Marin Wd - Pt. Reyes had any water quality violations?

The EPA has 2 violations on file for North Marin Wd - Pt. Reyes, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.