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Tap water quality report

Yomba Indian Reservation

EPA monitoring tested this supplier for 68 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
10
detected
30
people served
9
health-based violations
Nevada rankingsLead in NevadaPFAS in Nevada
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.

9
health-based violations
328
violations on file
71
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2023-06-10
TT Health-based Unaddressed 2023-06-10
TT Health-based Unaddressed 2023-06-10
TT Health-based Unaddressed 2021-11-01
MCL Health-based Resolved 2015-11-01 → 2015-11-30
MCL Health-based Resolved 2015-10-01 → 2015-10-31
MCL Health-based Resolved 2015-01-01 → 2015-01-31
MCL Health-based Resolved 2014-08-01 → 2014-08-31
MCL Health-based Resolved 2014-07-01 → 2014-07-31
MON Monitoring Archived 2026-03-01 → 2026-03-31

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
Nitrate
1300 µg/L 13%
of the EPA limit 10000 µg/L
 12/12 SYR4 2013–2018
Lead
0.0108 mg/L 72%
of the EPA limit 0.0150 mg/L
 4/4 LCR 2019
Chromium
2.9 µg/L 2.9%
of the EPA limit 100 µg/L
worst single sample: 3 µg/L
3/3 SYR4 2013–2016
Combined Uranium
12.6203 µg/L 42%
of the EPA limit 30 µg/L
worst single sample: 13.112 µg/L
3/3 SYR4 2013–2014
Gross Alpha, Excl. Radon And U
8.47 pCi/L 56%
of the EPA limit 15 pCi/L
worst single sample: 8.8 pCi/L
3/3 SYR4 2013–2014
Barium
60 µg/L 3%
of the EPA limit 2000 µg/L
 2/2 SYR4 2013–2016
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 2/3 SYR4 2013–2016
Selenium
1.95 µg/L 3.9%
of the EPA limit 50 µg/L
worst single sample: 2 µg/L
2/3 SYR4 2013–2016
Combined Radium (-226 And -228)
0.5000 pCi/L 10%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2014
Gross Beta Particle Activity
9.1 pCi/L
No EPA limit set
 1/1 SYR4 2014
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Brian Bill
Phone
7757610322
Email
[email protected]

Frequently asked questions about Yomba Indian Reservation

Is Yomba Indian Reservation tap water safe to drink?

EPA monitoring detected 10 contaminants in Yomba Indian Reservation'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 Yomba Indian Reservation's water?

EPA monitoring detected Nitrate, Lead, Chromium, Combined Uranium, Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Yomba Indian Reservation serve?

Yomba Indian Reservation reports serving 30 people in Nevada, per its EPA record.

Has Yomba Indian Reservation had any water quality violations?

The EPA has 328 violations on file for Yomba Indian Reservation, of which 9 are health-based (a contaminant limit or required treatment was breached) and 71 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.