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Tap water quality report

Md 46 Ahwahnee Resorts

EPA monitoring tested this supplier for 55 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

55
contaminants tested
20
detected
300
people served
92
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.

92
health-based violations
154
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2017-11-01 → 2017-11-30
MCL Health-based Resolved 2017-11-01 → 2017-11-30
MCL Health-based Resolved 2017-09-01 → 2017-09-30
MCL Health-based Resolved 2017-09-01 → 2017-09-30
MCL Health-based Resolved 2017-06-01 → 2017-06-30
MCL Health-based Resolved 2017-06-01 → 2017-06-30
MCL Health-based Resolved 2017-05-01 → 2017-05-31
MCL Health-based Resolved 2017-05-01 → 2017-05-31
MCL Health-based Resolved 2016-12-01 → 2016-12-31
MCL Health-based Resolved 2016-12-01 → 2016-12-31

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
Arsenic
12 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 19 µg/L
163/163 SYR4 2012–2019
Nitrate
3400 µg/L 34%
of the EPA limit 10000 µg/L
worst single sample: 5100 µg/L
42/68 SYR4 2014–2019
Combined Uranium
30.0235 µg/L 100%
of the EPA limit, at the 95th percentile of samples — 30 µg/L
worst single sample: 35.76 µg/L
12/12 SYR4 2012–2019
Barium
6.25 µg/L 0.3%
of the EPA limit 2000 µg/L
worst single sample: 6.7 µg/L
6/6 SYR4 2014–2017
Combined Radium (-226 And -228)
1.748 pCi/L 35%
of the EPA limit 5 pCi/L
worst single sample: 1.89 pCi/L
5/5 SYR4 2013–2014
Copper
10.77 µg/L 0.8%
of the EPA limit 1300 µg/L
worst single sample: 11 µg/L
3/7 SYR4 2014–2017
Fluoride
319 µg/L 8%
of the EPA limit 4000 µg/L
worst single sample: 320 µg/L
3/7 SYR4 2014–2017
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 3/3 LCR 2023
Mercury
0.8460 µg/L 42%
of the EPA limit 2 µg/L
worst single sample: 0.8700 µg/L
3/6 SYR4 2014–2017
Lead
3.13 µg/L 21%
of the EPA limit 15 µg/L
worst single sample: 3.2 µg/L
2/6 SYR4 2014–2017
Bromodichloromethane
2.7 µg/L
No EPA limit set
 1/4 SYR4 2014–2018
Bromoform
5.5 µg/L
No EPA limit set
 1/4 SYR4 2014–2018
Chloroform
0.7200 µg/L
No EPA limit set
 1/4 SYR4 2014–2018
Dibromoacetic Acid
4.1 µg/L
No EPA limit set
 1/1 SYR4 2018
Dibromochloromethane
6.7 µg/L
No EPA limit set
 1/4 SYR4 2014–2018
Monobromoacetic Acid
1.6 µg/L
No EPA limit set
 1/1 SYR4 2018
Nitrate-Nitrite
220000 µg/L 2200%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
 1/2 SYR4 2017
Selenium
1.3 µg/L 2.6%
of the EPA limit 50 µg/L
 1/6 SYR4 2014–2017
TTHM
16 µg/L 20%
of the EPA limit 80 µg/L
 1/4 SYR4 2014–2018
Total Haloacetic Acids (HAA5)
5.7 µg/L 9.5%
of the EPA limit 60 µg/L
 1/1 SYR4 2018
35 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalAsbestosAtrazineBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDichloroacetic AcidEthylbenzeneLassoMonochloroacetic AcidNitriteSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
BROWN, CHAD
Phone
559-675-7820
Email
chad.brown@maderacounty.com

Frequently asked questions about Md 46 Ahwahnee Resorts

Is Md 46 Ahwahnee Resorts tap water safe to drink?

EPA monitoring detected 20 contaminants in Md 46 Ahwahnee Resorts'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 46 Ahwahnee Resorts's water?

EPA monitoring detected Arsenic, Nitrate, Combined Uranium, Barium, Combined Radium (-226 And -228), and others. The full list with the level and data source for each is above.

How many people does Md 46 Ahwahnee Resorts serve?

Md 46 Ahwahnee Resorts reports serving 300 people in California, per its EPA record.

Has Md 46 Ahwahnee Resorts had any water quality violations?

The EPA has 154 violations on file for Md 46 Ahwahnee Resorts, of which 92 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.