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Tap water quality report

Williams Mutual Water Company

EPA monitoring tested this supplier for 41 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

41
contaminants tested
5
detected
165
people served
1
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Tulare

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.

1
health-based violations
31
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
RPT Monitoring Unaddressed 2024-10-17
MON Monitoring Resolved 2018-05-01 → 2018-05-31
MON Monitoring Resolved 2018-05-01 → 2018-05-31
Other Monitoring Resolved 2016-07-01
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2015-01-01 → 2015-12-31
MR Monitoring Resolved 2015-01-01 → 2015-12-31
Other Monitoring Resolved 2011-07-01
Other Monitoring Resolved 2011-07-01

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
3500 µg/L 35%
of the EPA limit 10000 µg/L
 20/20 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
 2/3 SYR4 2013–2019
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 1/3 SYR4 2013–2019
Lead
0.5000 µg/L 3.3%
of the EPA limit 15 µg/L
 1/2 SYR4 2013–2016
36 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicAtrazineBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylene DibromideEthylbenzeneLassoMercuryNitriteSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MARTIN, EDDIE
Phone
559-788-9517
Email
eddie_martinstire@yahoo.com

Frequently asked questions about Williams Mutual Water Company

Is Williams Mutual Water Company tap water safe to drink?

EPA monitoring detected 5 contaminants in Williams 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 Williams Mutual Water Company's water?

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

How many people does Williams Mutual Water Company serve?

Williams Mutual Water Company reports serving 165 people in California, per its EPA record.

Has Williams Mutual Water Company had any water quality violations?

The EPA has 31 violations on file for Williams Mutual Water Company, of which 1 is health-based (a contaminant limit or required treatment was breached) and 2 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.