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Tap water quality report

First Mutual Water

EPA monitoring tested this supplier for 39 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

39
contaminants tested
8
detected
35
people served
111
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Kern

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.

111
health-based violations
127
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-07-01 → 2025-09-30
MCL Health-based Archived 2025-04-01 → 2025-06-30
MCL Health-based Archived 2025-01-01 → 2025-03-31
MCL Health-based Archived 2024-10-01 → 2024-12-31
MCL Health-based Archived 2024-07-01 → 2024-09-30
MCL Health-based Archived 2024-04-01 → 2024-06-30
MCL Health-based Archived 2024-01-01 → 2024-03-31
MCL Health-based Archived 2023-10-01 → 2023-12-31
MCL Health-based Archived 2023-07-01 → 2023-09-30

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
60 µg/L 600%
of the EPA limit, in the worst sample — 10 µg/L
 33/33 SYR4 2012–2019
Nitrate
2000 µg/L 20%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Barium
22 µg/L 1.1%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2018
Chromium
22 µg/L 22%
of the EPA limit 100 µg/L
 3/3 SYR4 2012–2018
Combined Uranium
7.301 µg/L 24%
of the EPA limit 30 µg/L
 3/3 SYR4 2013–2017
Fluoride
510 µg/L 13%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Selenium
4.9 µg/L 9.8%
of the EPA limit 50 µg/L
 3/3 SYR4 2012–2018
31 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAtrazineBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideDichloromethaneEthylbenzeneLeadMercuryNitriteSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ROBINSON, CORTHEL
Phone
661-435-5296
Email
corthelrobinson@gmail.com

Frequently asked questions about First Mutual Water

Is First Mutual Water tap water safe to drink?

EPA monitoring detected 8 contaminants in First Mutual Water'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 First Mutual Water's water?

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

How many people does First Mutual Water serve?

First Mutual Water reports serving 35 people in California, per its EPA record.

Has First Mutual Water had any water quality violations?

The EPA has 127 violations on file for First Mutual Water, of which 111 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.