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Bass Lake Heights Mutual Water

EPA monitoring tested this supplier for 41 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

41
contaminants tested
7
detected
250
people served
99
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.

99
health-based violations
121
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
MCL Health-based Resolved 2017-09-01 → 2017-09-30
MCL Health-based Resolved 2017-09-01 → 2017-09-30
MCL Health-based Resolved 2014-11-01 → 2014-11-30
MCL Health-based Resolved 2014-11-01 → 2014-11-30
MCL Health-based Resolved 2014-11-01 → 2014-11-30
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31
MCL Health-based Resolved 2011-01-01 → 2011-03-31

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
Arsenic
22.25 µg/L 223%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 35 µg/L
76/111 SYR4 2012–2019
Combined Uranium
22.946 µg/L 76%
of the EPA limit 30 µg/L
worst single sample: 24.138 µg/L
47/49 SYR4 2012–2019
Fluoride
898 µg/L 22%
of the EPA limit 4000 µg/L
worst single sample: 910 µg/L
9/9 SYR4 2013–2019
Lead
0.0039 mg/L 26%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2025
Nitrate
2600 µg/L 26%
of the EPA limit 10000 µg/L
 4/60 SYR4 2012–2019
Lead
15 µg/L 100%
of the EPA limit 15 µg/L
 1/9 SYR4 2013–2019
Toluene
0.5900 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/3 SYR4 2017
34 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosAtrazineBariumBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbon TetrachlorideChromiumDichloromethaneEthylbenzeneMercuryNitrate-NitriteNitriteSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
DE LA TORRE, JOSE
Email
DLTCJOSE@gmail.com

Frequently asked questions about Bass Lake Heights Mutual Water

Is Bass Lake Heights Mutual Water tap water safe to drink?

EPA monitoring detected 7 contaminants in Bass Lake Heights 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 Bass Lake Heights Mutual Water's water?

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

How many people does Bass Lake Heights Mutual Water serve?

Bass Lake Heights Mutual Water reports serving 250 people in California, per its EPA record.

Has Bass Lake Heights Mutual Water had any water quality violations?

The EPA has 121 violations on file for Bass Lake Heights Mutual Water, of which 99 are 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.