Is Mi Wuk Village Mut Wtr Co Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Private
Counties served: Tuolumne

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
MCL	Health-based	Resolved	2008-04-01 → 2008-06-30
MCL	Health-based	Resolved	2008-04-01 → 2008-06-30
MON	Monitoring	Resolved	2025-04-01 → 2025-04-30
MON	Monitoring	Resolved	2025-04-01 → 2025-04-30
MR	Monitoring	Resolved	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2007-05-01 → 2007-05-31
MR	Monitoring	Resolved	2007-05-01 → 2007-05-31
MR	Monitoring	Resolved	2006-01-01 → 2006-12-31
MR	Monitoring	Resolved	2006-01-01 → 2006-12-31

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 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
Nitrate	1717.6 µg/L 17% of the EPA limit 10000 µg/L worst single sample: 2700 µg/L	48/64	SYR4	2012–2019
Chloroform	84.8 µg/L No EPA limit set worst single sample: 92 µg/L	25/25	SYR4	2013–2019
TTHM	86.8 µg/L 109% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 94 µg/L	25/25	SYR4	2013–2019
Dichloroacetic Acid	38.8 µg/L No EPA limit set worst single sample: 41 µg/L	23/25	SYR4	2013–2019
Bromodichloromethane	2.685 µg/L No EPA limit set worst single sample: 3 µg/L	22/25	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	92 µg/L 153% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 110 µg/L	21/25	SYR4	2013–2019
Trichloroacetic Acid	54 µg/L No EPA limit set worst single sample: 67 µg/L	21/25	SYR4	2013–2019
Lead	0.0120 mg/L 80% of the EPA limit 0.0150 mg/L	19/19	LCR	2023
Monochloroacetic Acid	3.18 µg/L No EPA limit set worst single sample: 3.2 µg/L	5/25	SYR4	2013–2019
Dibromochloromethane	1 µg/L No EPA limit set	2/25	SYR4	2013–2019
Fluoride	100 µg/L 2.5% of the EPA limit 4000 µg/L	2/14	SYR4	2012–2019

40 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicAtrazineBariumBenzeneBeryllium, TotalBromoformChlorobenzeneCopperCadmiumCarbon TetrachlorideChromiumDichloromethaneDibromoacetic AcidEthylbenzeneLassoLeadMercuryMonobromoacetic AcidNitrate-NitriteNitriteSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: LOW, LEVI
Phone: 209-586-3304
Email: [email protected]

Frequently asked questions about Mi Wuk Village Mut Wtr Co

Is Mi Wuk Village Mut Wtr Co tap water safe to drink?

EPA monitoring detected 11 contaminants in Mi Wuk Village Mut Wtr Co'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 Mi Wuk Village Mut Wtr Co's water?

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

How many people does Mi Wuk Village Mut Wtr Co serve?

Mi Wuk Village Mut Wtr Co reports serving 2,163 people in California, per its EPA record.

Has Mi Wuk Village Mut Wtr Co had any water quality violations?

The EPA has 11 violations on file for Mi Wuk Village Mut Wtr Co, 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.