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Tap water quality report

Mark West Acres Mwc

EPA monitoring tested this supplier for 59 contaminants and detected 2. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

59
contaminants tested
2
detected
61
people served
9
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.

9
health-based violations
21
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2001-10-01 → 2001-10-31
MCL Health-based Resolved 2001-10-01 → 2001-10-31
MCL Health-based Resolved 1998-07-01 → 1998-07-31
MCL Health-based Resolved 1998-04-01 → 1998-04-30
MCL Health-based Resolved 1998-04-01 → 1998-04-30
MCL Health-based Resolved 1996-10-01 → 1996-10-31
MCL Health-based Resolved 1996-10-01 → 1996-10-31
MCL Health-based Resolved 1996-05-01 → 1996-05-31
MCL Health-based Resolved 1996-05-01 → 1996-05-31
MR Monitoring Resolved 1994-07-01 → 1994-07-31

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
 23/23 LCR 2025
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
57 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, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrateNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FRAZER, DAVID
Phone
707-755-3609
Email
dbfrazer@comcast.net

Frequently asked questions about Mark West Acres Mwc

Is Mark West Acres Mwc tap water safe to drink?

EPA monitoring detected 2 contaminants in Mark West Acres Mwc'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 Mark West Acres Mwc's water?

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

How many people does Mark West Acres Mwc serve?

Mark West Acres Mwc reports serving 61 people in California, per its EPA record.

Has Mark West Acres Mwc had any water quality violations?

The EPA has 21 violations on file for Mark West Acres Mwc, of which 9 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.