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Madera Valley Water Company

EPA monitoring tested this supplier for 77 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
7
detected
6,494
people served
8
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Madera

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.

8
health-based violations
12
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2002-05-01 → 2002-05-31
MCL Health-based Resolved 2002-05-01 → 2002-05-31
MCL Health-based Resolved 2000-12-01 → 2000-12-31
MCL Health-based Resolved 2000-12-01 → 2000-12-31
MCL Health-based Resolved 1998-10-01 → 1998-10-31
MCL Health-based Resolved 1998-10-01 → 1998-10-31
MCL Health-based Resolved 1993-07-01 → 1993-08-31
MCL Health-based Resolved 1993-07-01 → 1993-08-31
MR Monitoring Resolved 2006-12-01 → 2006-12-31
MR Monitoring Resolved 2006-12-01 → 2006-12-31

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
4294 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4520 µg/L
106/110 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 30/30 LCR 2023
Fluoride
206 µg/L 5.1%
of the EPA limit 4000 µg/L
worst single sample: 230 µg/L
17/17 SYR4 2013–2019
Arsenic
2.81 µg/L 28%
of the EPA limit 10 µg/L
worst single sample: 2.9 µg/L
7/17 SYR4 2013–2019
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
 6/17 SYR4 2013–2019
Nitrate-Nitrite
3800 µg/L 38%
of the EPA limit 10000 µg/L
 3/5 SYR4 2019
Copper
140 µg/L 11%
of the EPA limit 1300 µg/L
 1/17 SYR4 2013–2019
70 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCadmiumCarbon TetrachlorideChloroformChromiumDichloromethaneDibromochloromethaneEthylene DibromideEthylbenzeneHfpo-DaLassoLeadMercuryNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RODGERS, GREG
Phone
559-674-2407
Email
gregrodgers@mvwc.net

Frequently asked questions about Madera Valley Water Company

Is Madera Valley Water Company tap water safe to drink?

EPA monitoring detected 7 contaminants in Madera Valley 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 Madera Valley Water Company's water?

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

How many people does Madera Valley Water Company serve?

Madera Valley Water Company reports serving 6,494 people in California, per its EPA record.

Has Madera Valley Water Company had any water quality violations?

The EPA has 12 violations on file for Madera Valley Water Company, of which 8 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.