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Tap water quality report

Colorado Mutual Water Company

EPA monitoring tested this supplier for 70 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
6
detected
39
people served
1
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Los Angeles

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
8
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
RPT Monitoring Unaddressed 2024-10-17
MR Monitoring Resolved 1993-07-01
Other Monitoring Archived 1984-09-01 → 1984-09-30
Other Monitoring Archived 1984-08-01 → 1984-08-31
Other Monitoring Archived 1984-07-01 → 1984-07-31
MR Monitoring Archived 1981-10-01 → 1982-09-30
MR Monitoring Archived 1980-10-30 → 1981-10-29

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
Nitrate
2500 µg/L 25%
of the EPA limit 10000 µg/L
 30/30 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Selenium
12 µg/L 24%
of the EPA limit 50 µg/L
 5/5 SYR4 2012–2019
Combined Uranium
5.96 µg/L 20%
of the EPA limit 30 µg/L
 4/4 SYR4 2015–2017
Fluoride
230 µg/L 5.8%
of the EPA limit 4000 µg/L
 4/4 SYR4 2012–2019
Nitrate-Nitrite
1600 µg/L 16%
of the EPA limit 10000 µg/L
 2/2 SYR4 2016–2019
64 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TONA, CHARLES
Phone
916-412-3309
Email
coloradomutualwaterco@gmail.com

Frequently asked questions about Colorado Mutual Water Company

Is Colorado Mutual Water Company tap water safe to drink?

EPA monitoring detected 6 contaminants in Colorado 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 Colorado Mutual Water Company's water?

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

How many people does Colorado Mutual Water Company serve?

Colorado Mutual Water Company reports serving 39 people in California, per its EPA record.

Has Colorado Mutual Water Company had any water quality violations?

The EPA has 8 violations on file for Colorado 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.