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Tap water quality report

Grier Mutual Water Company

EPA monitoring tested this supplier for 48 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

48
contaminants tested
9
detected
98
people served
0
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.

0
health-based violations
12
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2017-10-01
MR Monitoring Resolved 2017-10-01
MR Monitoring Resolved 2006-01-01 → 2006-12-31
MR Monitoring Resolved 1993-07-01 → 2003-12-31
Other Monitoring Archived 1983-09-01 → 1983-09-30
Other Monitoring Archived 1983-04-01 → 1983-04-30
Other Monitoring Archived 1983-03-01 → 1983-03-31
Other Monitoring Archived 1983-02-01 → 1983-02-28
Other Monitoring Archived 1982-12-01 → 1982-12-31
Other Monitoring Archived 1982-10-01 → 1982-10-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2024
Nitrate
271.2 µg/L 2.7%
of the EPA limit 10000 µg/L
 6/16 SYR4 2012–2019
Barium
725.2 µg/L 36%
of the EPA limit 2000 µg/L
worst single sample: 726 µg/L
2/2 SYR4 2013–2017
Combined Uranium
7.42169 µg/L 25%
of the EPA limit 30 µg/L
worst single sample: 7.5096 µg/L
2/2 SYR4 2013–2019
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
 1/2 SYR4 2013–2017
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 1/2 SYR4 2013–2017
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 1/2 SYR4 2013–2017
Mercury
0.0200 µg/L 1%
of the EPA limit 2 µg/L
 1/2 SYR4 2013–2017
Nitrate-Nitrite
200000 µg/L 2000%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
 1/1 SYR4 2013
39 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosAtrazineBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCadmiumCarbon TetrachlorideDichloromethaneDibromochloromethaneEthylene DibromideEthylbenzeneLassoLeadNitriteSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RUFFA, BOB
Phone
559-333-0455
Email
[email protected]

Frequently asked questions about Grier Mutual Water Company

Is Grier Mutual Water Company tap water safe to drink?

EPA monitoring detected 9 contaminants in Grier 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 Grier Mutual Water Company's water?

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

How many people does Grier Mutual Water Company serve?

Grier Mutual Water Company reports serving 98 people in California, per its EPA record.

Has Grier Mutual Water Company had any water quality violations?

The EPA has 12 violations on file for Grier Mutual Water Company, of which 0 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.