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Tap water quality report

Mishongnovi (Upper Sipaulovi/Upper Mishongnovi)

EPA monitoring tested this supplier for 71 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
7
detected
490
people served
122
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
GWP
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.

122
health-based violations
383
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2026-03-05
MCL Health-based Resolved 2022-07-01 → 2022-09-30
MCL Health-based Resolved 2022-04-01 → 2022-06-30
MCL Health-based Resolved 2022-04-01 → 2022-06-30
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 2021-10-01 → 2021-12-31
MCL Health-based Resolved 2021-10-01 → 2021-12-31
MCL Health-based Resolved 2021-07-01 → 2021-09-30
MCL Health-based Resolved 2021-07-01 → 2021-09-30

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
Arsenic
18.35 µg/L 184%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 20 µg/L
31/31 SYR4 2012–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Combined Uranium
14.995 µg/L 50%
of the EPA limit 30 µg/L
worst single sample: 15.347 µg/L
4/4 SYR4 2012–2018
Nitrate
4080 µg/L 41%
of the EPA limit 10000 µg/L
 4/18 SYR4 2012–2019
Fluoride
319 µg/L 8%
of the EPA limit 4000 µg/L
worst single sample: 320 µg/L
3/3 SYR4 2012–2018
Gross Alpha, Excl. Radon And U
10.13 pCi/L 68%
of the EPA limit 15 pCi/L
worst single sample: 10.3 pCi/L
3/4 SYR4 2012–2018
Antimony, Total
0.5000 µg/L 8.3%
of the EPA limit 6 µg/L
 1/3 SYR4 2012–2018
64 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-DAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Phyllis Wittsell
Phone
9287372570
Email
[email protected]

Frequently asked questions about Mishongnovi (Upper Sipaulovi/Upper Mishongnovi)

Is Mishongnovi (Upper Sipaulovi/Upper Mishongnovi) tap water safe to drink?

EPA monitoring detected 7 contaminants in Mishongnovi (Upper Sipaulovi/Upper Mishongnovi)'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 Mishongnovi (Upper Sipaulovi/Upper Mishongnovi)'s water?

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

How many people does Mishongnovi (Upper Sipaulovi/Upper Mishongnovi) serve?

Mishongnovi (Upper Sipaulovi/Upper Mishongnovi) reports serving 490 people in Arizona, per its EPA record.

Has Mishongnovi (Upper Sipaulovi/Upper Mishongnovi) had any water quality violations?

The EPA has 383 violations on file for Mishongnovi (Upper Sipaulovi/Upper Mishongnovi), of which 122 are health-based (a contaminant limit or required treatment was breached) and 1 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.