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Tap water quality report

Upper Moenkopi

EPA monitoring tested this supplier for 72 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
13
detected
1,740
people served
8
health-based violations
Arizona rankingsLead in ArizonaPFAS in Arizona
Water source
Ground 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.

8
health-based violations
312
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-07-01 → 2013-09-30
MCL Health-based Resolved 2008-08-01 → 2008-08-31
MCL Health-based Resolved 2007-08-01 → 2007-08-31
MCL Health-based Resolved 2006-07-01 → 2006-07-31
MCL Health-based Resolved 2002-07-01 → 2002-07-31
MCL Health-based Resolved 2000-08-01 → 2000-08-31
MCL Health-based Resolved 2000-07-01 → 2000-07-31
MCL Health-based Resolved 1994-10-01 → 1994-10-31
MR Monitoring Archived 2024-10-01 → 2024-12-31
MR Monitoring Archived 2024-10-01 → 2024-12-31

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
Nitrate
1970 µg/L 20%
of the EPA limit 10000 µg/L
 20/36 SYR4 2012–2019
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2025
TTHM
14.4 µg/L 18%
of the EPA limit 80 µg/L
worst single sample: 15 µg/L
13/13 SYR4 2012–2019
Barium
91.25 µg/L 4.6%
of the EPA limit 2000 µg/L
worst single sample: 93 µg/L
6/9 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
10.25 µg/L 17%
of the EPA limit 60 µg/L
worst single sample: 11.2 µg/L
6/13 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
4.33385 pCi/L 29%
of the EPA limit 15 pCi/L
worst single sample: 4.481 pCi/L
4/7 SYR4 2012–2017
Arsenic
4.92 µg/L 49%
of the EPA limit 10 µg/L
worst single sample: 5.2 µg/L
3/9 SYR4 2012–2019
Combined Radium (-226 And -228)
8.17435 pCi/L 163%
of the EPA limit, at the 95th percentile of samples — 5 pCi/L
worst single sample: 8.573 pCi/L
2/7 SYR4 2012–2017
Fluoride
721.5 µg/L 18%
of the EPA limit 4000 µg/L
worst single sample: 750 µg/L
2/10 SYR4 2012–2019
Selenium
16.2795 µg/L 33%
of the EPA limit 50 µg/L
worst single sample: 17 µg/L
2/9 SYR4 2012–2019
Chlorobenzene
1.2 µg/L 1.2%
of the EPA limit 100 µg/L
 1/14 SYR4 2012–2019
Combined Uranium
5.8 µg/L 19%
of the EPA limit 30 µg/L
 1/7 SYR4 2012–2017
Toluene
1.1 µg/L 0.1%
of the EPA limit 1000 µg/L
 1/17 SYR4 2012–2019
59 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, TotalCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Neil Yazzie
Phone
9286061626
Email
[email protected]

Frequently asked questions about Upper Moenkopi

Is Upper Moenkopi tap water safe to drink?

EPA monitoring detected 13 contaminants in Upper Moenkopi'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 Upper Moenkopi's water?

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

How many people does Upper Moenkopi serve?

Upper Moenkopi reports serving 1,740 people in Arizona, per its EPA record.

Has Upper Moenkopi had any water quality violations?

The EPA has 312 violations on file for Upper Moenkopi, of which 8 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.