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Big River Vista Mutual Water Company

EPA monitoring tested this supplier for 56 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

56
contaminants tested
9
detected
36
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Mendocino

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.

0
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 1995-05-01 → 1995-05-31
MR Monitoring Resolved 1995-05-01 → 1995-05-31
MR Monitoring Resolved 1993-07-01 → 2003-12-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2023
Bromodichloromethane
1.81 µg/L
No EPA limit set
 3/3 SYR4 2012–2017
Bromoform
8.36 µg/L
No EPA limit set
 3/3 SYR4 2012–2017
Dibromoacetic Acid
3.6 µg/L
No EPA limit set
 3/3 SYR4 2012–2017
Dibromochloromethane
5.05 µg/L
No EPA limit set
 3/3 SYR4 2012–2017
TTHM
15.16 µg/L 19%
of the EPA limit 80 µg/L
 3/3 SYR4 2012–2017
Total Haloacetic Acids (HAA5)
4.3 µg/L 7.2%
of the EPA limit 60 µg/L
 3/3 SYR4 2012–2017
Chloroform
0.5900 µg/L
No EPA limit set
 1/3 SYR4 2012–2017
Dichloroacetic Acid
1.2 µg/L
No EPA limit set
 1/3 SYR4 2012–2017
47 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBariumBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDinosebEthylbenzeneFluorideLassoMercuryMonobromoacetic AcidMonochloroacetic AcidNitrateNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MURPHY, DENNACK
Phone
510-501-1939
Email
dennakm@gmail.com

Frequently asked questions about Big River Vista Mutual Water Company

Is Big River Vista Mutual Water Company tap water safe to drink?

EPA monitoring detected 9 contaminants in Big River Vista Mutual Water Company'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 Big River Vista Mutual Water Company's water?

EPA monitoring detected Lead, Bromodichloromethane, Bromoform, Dibromoacetic Acid, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Big River Vista Mutual Water Company serve?

Big River Vista Mutual Water Company reports serving 36 people in California, per its EPA record.

Has Big River Vista Mutual Water Company had any water quality violations?

The EPA has 3 violations on file for Big River Vista Mutual Water Company, of which 0 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.