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Tap water quality report

Md 37 La Vina

EPA monitoring tested this supplier for 42 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
8
detected
350
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Local government
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.

0
health-based violations
23
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2025-02-01 → 2025-02-28
MON Monitoring Resolved 2025-02-01 → 2025-02-28
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31
MR Monitoring Resolved 2008-01-01 → 2008-12-31

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
2100 µg/L 21%
of the EPA limit 10000 µg/L
 40/40 SYR4 2012–2019
1,2-DIBROMO-3-CHLOROPROPANE
0.0490 µg/L 25%
of the EPA limit 0.2000 µg/L
worst single sample: 0.0500 µg/L
5/8 SYR4 2012–2018
Arsenic
1.9 µg/L 19%
of the EPA limit 10 µg/L
 4/4 SYR4 2015–2018
Barium
74.7 µg/L 3.7%
of the EPA limit 2000 µg/L
worst single sample: 75 µg/L
4/4 SYR4 2015–2018
Chromium
3.785 µg/L 3.8%
of the EPA limit 100 µg/L
worst single sample: 3.8 µg/L
4/4 SYR4 2015–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2025
Copper
18.4 µg/L 1.4%
of the EPA limit 1300 µg/L
worst single sample: 19 µg/L
3/6 SYR4 2014–2018
Lead
3.77 µg/L 25%
of the EPA limit 15 µg/L
worst single sample: 3.9 µg/L
2/4 SYR4 2015–2018
34 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAtrazineBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideDichloromethaneEthylene DibromideEthylbenzeneFluorideLassoMercuryNitriteSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
MITCHELL, JASON
Phone
559-517-7798
Email
jason.mitchell@maderacounty.com

Frequently asked questions about Md 37 La Vina

Is Md 37 La Vina tap water safe to drink?

EPA monitoring detected 8 contaminants in Md 37 La Vina'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 Md 37 La Vina's water?

EPA monitoring detected Nitrate, 1,2-DIBROMO-3-CHLOROPROPANE, Arsenic, Barium, Chromium, and others. The full list with the level and data source for each is above.

How many people does Md 37 La Vina serve?

Md 37 La Vina reports serving 350 people in California, per its EPA record.

Has Md 37 La Vina had any water quality violations?

The EPA has 23 violations on file for Md 37 La Vina, 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.