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Tap water quality report

Wmatua Miner Flat

EPA monitoring tested this supplier for 101 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

101
contaminants tested
10
detected
15,570
people served
16
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Surface water
Ownership
Native American

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.

16
health-based violations
223
violations on file
9
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Unaddressed 2026-01-01
TT Health-based Resolved 2024-10-17

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
58 µg/L 73%
of the EPA limit 80 µg/L
 85/95 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
78 µg/L 130%
of the EPA limit, in the worst sample — 60 µg/L
 78/94 SYR4 2012–2019
Arsenic
8.7 µg/L 87%
of the EPA limit 10 µg/L
 33/36 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Lithium
22.7 µg/L
No EPA limit set
 8/8 UCMR-5 2025
Chromium
1.7 µg/L 1.7%
of the EPA limit 100 µg/L
 1/3 SYR4 2013–2015
Combined Uranium
7.301 µg/L 24%
of the EPA limit 30 µg/L
 1/1 SYR4 2014
Dalapon
2.2 µg/L 1.1%
of the EPA limit 200 µg/L
 1/5 SYR4 2012–2017
Fluoride
280 µg/L 7%
of the EPA limit 4000 µg/L
 1/3 SYR4 2013–2015
Hexachlorocyclopentadiene
0.1800 µg/L 0.4%
of the EPA limit 50 µg/L
 1/5 SYR4 2012–2017
91 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)DichloromethaneDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitrateNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Kasey Velasquez
Phone
9283382474
Email
kaseyvelasquez@wmat.us

Frequently asked questions about Wmatua Miner Flat

Is Wmatua Miner Flat tap water safe to drink?

EPA monitoring detected 10 contaminants in Wmatua Miner Flat'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 Wmatua Miner Flat's water?

EPA monitoring detected TTHM, Total Haloacetic Acids (HAA5), Arsenic, Lead, Lithium, and others. The full list with the level and data source for each is above.

How many people does Wmatua Miner Flat serve?

Wmatua Miner Flat reports serving 15,570 people in Arizona, per its EPA record.

Has Wmatua Miner Flat had any water quality violations?

The EPA has 223 violations on file for Wmatua Miner Flat, of which 16 are health-based (a contaminant limit or required treatment was breached) and 9 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.