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Tap water quality report

Madera Co md10a-madera Ranchos

EPA monitoring tested this supplier for 75 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

75
contaminants tested
9
detected
3,172
people served
9
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.

9
health-based violations
12
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-04-01 → 2014-04-30
MCL Health-based Resolved 2014-04-01 → 2014-04-30
MCL Health-based Resolved 2004-12-01 → 2004-12-31
MCL Health-based Resolved 2001-02-01 → 2001-04-01
MCL Health-based Resolved 2001-02-01 → 2001-04-01
MCL Health-based Resolved 1994-07-01 → 1994-07-31
MCL Health-based Resolved 1994-07-01 → 1994-07-31
MCL Health-based Resolved 1993-11-01 → 1993-11-30
MCL Health-based Resolved 1993-11-01 → 1993-11-30
MR Monitoring Resolved 2010-11-01 → 2010-11-30

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 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
6847.8 µg/L 68%
of the EPA limit 10000 µg/L
worst single sample: 8362 µg/L
70/70 SYR4 2012–2019
Lead
0.0054 mg/L 36%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
Barium
372.5 µg/L 19%
of the EPA limit 2000 µg/L
worst single sample: 400 µg/L
12/12 SYR4 2012–2019
Arsenic
4.3 µg/L 43%
of the EPA limit 10 µg/L
worst single sample: 4.5 µg/L
11/12 SYR4 2012–2019
Fluoride
210 µg/L 5.3%
of the EPA limit 4000 µg/L
 10/12 SYR4 2012–2019
Chromium
2.71 µg/L 2.7%
of the EPA limit 100 µg/L
worst single sample: 2.8 µg/L
7/12 SYR4 2012–2019
Selenium
1.4 µg/L 2.8%
of the EPA limit 50 µg/L
 2/12 SYR4 2012–2019
Copper
2.3 µg/L 0.2%
of the EPA limit 1300 µg/L
 1/12 SYR4 2012–2019
Combined Radium (-226 And -228)
1.77 pCi/L 35%
of the EPA limit 5 pCi/L
 1/1 SYR4 2015
66 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TOLER, PHIL
Phone
559-675-7811
Email
philip.toler@maderacounty.com

Frequently asked questions about Madera Co md10a-madera Ranchos

Is Madera Co md10a-madera Ranchos tap water safe to drink?

EPA monitoring detected 9 contaminants in Madera Co md10a-madera Ranchos'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 Co md10a-madera Ranchos's water?

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

How many people does Madera Co md10a-madera Ranchos serve?

Madera Co md10a-madera Ranchos reports serving 3,172 people in California, per its EPA record.

Has Madera Co md10a-madera Ranchos had any water quality violations?

The EPA has 12 violations on file for Madera Co md10a-madera Ranchos, of which 9 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.