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Tap water quality report

Loch Haven Mutual Water Company

EPA monitoring tested this supplier for 75 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

75
contaminants tested
6
detected
26
people served
114
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Sonoma

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.

114
health-based violations
143
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2017-10-01 → 2017-12-31
MCL Health-based Resolved 2017-10-01 → 2017-12-31
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2017-04-01 → 2017-06-30
MCL Health-based Resolved 2017-04-01 → 2017-06-30
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2017-01-01 → 2017-03-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31
MCL Health-based Resolved 2016-10-01 → 2016-12-31

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
Arsenic
28 µg/L 280%
of the EPA limit, in the worst sample — 10 µg/L
 42/67 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 20/20 LCR 2025
Barium
220 µg/L 11%
of the EPA limit 2000 µg/L
 2/2 SYR4 2012–2014
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 2/2 SYR4 2012–2014
Chromium
1.3 µg/L 1.3%
of the EPA limit 100 µg/L
 1/2 SYR4 2012–2014
Toluene
0.8600 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/3 SYR4 2012–2018
69 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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MACPHAIL, KATHRYN
Phone
707-696-1305
Email
kathrynmacphail@mac.com

Frequently asked questions about Loch Haven Mutual Water Company

Is Loch Haven Mutual Water Company tap water safe to drink?

EPA monitoring detected 6 contaminants in Loch Haven 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 Loch Haven Mutual Water Company's water?

EPA monitoring detected Arsenic, Lead, Barium, Fluoride, Chromium, and others. The full list with the level and data source for each is above.

How many people does Loch Haven Mutual Water Company serve?

Loch Haven Mutual Water Company reports serving 26 people in California, per its EPA record.

Has Loch Haven Mutual Water Company had any water quality violations?

The EPA has 143 violations on file for Loch Haven Mutual Water Company, of which 114 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.