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Tap water quality report

East Three Rivers Mutual Water Corp

EPA monitoring tested this supplier for 55 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

55
contaminants tested
11
detected
40
people served
3
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.

3
health-based violations
15
violations on file
3
still open
ViolationTypeStatusPeriod
TT Health-based Addressed 2024-10-17
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-11-01 → 2015-11-30
Other Monitoring Addressed 2025-07-01
MON Monitoring Resolved 2024-12-01 → 2024-12-31
MON Monitoring Resolved 2024-12-01 → 2024-12-31
MON Monitoring Resolved 2024-11-01 → 2024-11-30
MON Monitoring Resolved 2024-11-01 → 2024-11-30
RPT Monitoring Addressed 2024-10-17
MON Monitoring Resolved 2024-10-01 → 2024-10-31

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
Nitrate
8600 µg/L 86%
of the EPA limit 10000 µg/L
 20/22 SYR4 2013–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Combined Uranium
108.174 µg/L 361%
of the EPA limit, at the 95th percentile of samples — 30 µg/L
worst single sample: 110.26 µg/L
5/5 SYR4 2013–2019
Arsenic
49.3 µg/L 493%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 52 µg/L
3/5 SYR4 2013–2019
Fluoride
139 µg/L 3.5%
of the EPA limit 4000 µg/L
worst single sample: 140 µg/L
3/3 SYR4 2013–2019
Bromoform
1.1 µg/L
No EPA limit set
 1/3 SYR4 2017–2019
Cadmium
1.2 µg/L 24%
of the EPA limit 5 µg/L
 1/3 SYR4 2013–2019
Dibromoacetic Acid
1.3 µg/L
No EPA limit set
 1/2 SYR4 2017–2018
Dibromochloromethane
1 µg/L
No EPA limit set
 1/2 SYR4 2017–2018
Nitrate-Nitrite
6400 µg/L 64%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
TTHM
2.1 µg/L 2.6%
of the EPA limit 80 µg/L
 1/2 SYR4 2017–2018
44 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosAtrazineBariumBenzeneBeryllium, TotalBromodichloromethaneChlorobenzeneCopperCarbon TetrachlorideChloroformChromiumDichloromethaneDichloroacetic AcidEthylene DibromideEthylbenzeneLassoLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitriteSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Trichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GALLEGO, DEAN
Phone
559-320-6470
Email
[email protected]

Frequently asked questions about East Three Rivers Mutual Water Corp

Is East Three Rivers Mutual Water Corp tap water safe to drink?

EPA monitoring detected 11 contaminants in East Three Rivers Mutual Water Corp'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 East Three Rivers Mutual Water Corp's water?

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

How many people does East Three Rivers Mutual Water Corp serve?

East Three Rivers Mutual Water Corp reports serving 40 people in California, per its EPA record.

Has East Three Rivers Mutual Water Corp had any water quality violations?

The EPA has 15 violations on file for East Three Rivers Mutual Water Corp, of which 3 are health-based (a contaminant limit or required treatment was breached) and 3 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.