Is River Estates Mutual Water Company Tap Water Safe? Quality Report

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Addressed	2021-07-01
MR	Monitoring	Resolved	2005-07-01 → 2005-07-31
MR	Monitoring	Resolved	2005-07-01 → 2005-07-31
Other	Monitoring	Archived	1982-12-01 → 1982-12-31
MR	Monitoring	Archived	1981-10-01 → 1982-09-30
MR	Monitoring	Archived	1980-10-30 → 1981-10-29

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2025
Bromodichloromethane	5.4355 µg/L No EPA limit set worst single sample: 5.53 µg/L	4/5	SYR4	2013–2019
Chloroform	10.872 µg/L No EPA limit set worst single sample: 11.04 µg/L	4/5	SYR4	2013–2019
Dibromochloromethane	3.399 µg/L No EPA limit set worst single sample: 3.48 µg/L	4/5	SYR4	2013–2019
Nitrate	248.6 µg/L 2.5% of the EPA limit 10000 µg/L	4/32	SYR4	2012–2019
TTHM	20.807 µg/L 26% of the EPA limit 80 µg/L worst single sample: 21.35 µg/L	4/5	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	5.59 µg/L 9.3% of the EPA limit 60 µg/L worst single sample: 5.9 µg/L	3/5	SYR4	2013–2019
Dichloroacetic Acid	1.965 µg/L No EPA limit set worst single sample: 2 µg/L	2/5	SYR4	2013–2019
Fluoride	110 µg/L 2.8% of the EPA limit 4000 µg/L	2/6	SYR4	2013–2019
Trichloroacetic Acid	3.845 µg/L No EPA limit set worst single sample: 3.9 µg/L	2/5	SYR4	2013–2019
Arsenic	4.7 µg/L 47% of the EPA limit 10 µg/L	1/6	SYR4	2013–2019
Barium	120 µg/L 6% of the EPA limit 2000 µg/L	1/6	SYR4	2013–2019
Bromoform	2.42 µg/L No EPA limit set	1/5	SYR4	2013–2019

59 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: WALKER, JARED
Phone: 707-462-2666
Email: [email protected]

Frequently asked questions about River Estates Mutual Water Company

Is River Estates Mutual Water Company tap water safe to drink?

EPA monitoring detected 13 contaminants in River Estates 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 River Estates Mutual Water Company's water?

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

How many people does River Estates Mutual Water Company serve?

River Estates Mutual Water Company reports serving 250 people in California, per its EPA record.

Has River Estates Mutual Water Company had any water quality violations?

The EPA has 6 violations on file for River Estates Mutual Water Company, of which 0 are health-based (a contaminant limit or required treatment was breached) and 1 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.