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Tap water quality report

Winnemucca City of

EPA monitoring tested this supplier for 111 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

111
contaminants tested
19
detected
8,518
people served
9
health-based violations
Nevada rankingsLead in NevadaPFAS in Nevada
Water source
Ground water
Ownership
Local government
Counties served
Humboldt

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
212
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-05-01 → 2013-05-31
MCL Health-based Resolved 2013-05-01 → 2013-05-31
MCL Health-based Resolved 2013-05-01 → 2013-05-31
MCL Health-based Resolved 2013-05-01 → 2013-05-31
MCL Health-based Resolved 2010-08-01 → 2010-08-31
MCL Health-based Resolved 2010-08-01 → 2010-08-31
MCL Health-based Resolved 2010-08-01 → 2010-08-31
MCL Health-based Resolved 2010-08-01 → 2010-08-31
MCL Health-based Archived 1999-12-01 → 1999-12-31
MR Monitoring Resolved 2024-07-01 → 2024-07-31

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
6800 µg/L 68%
of the EPA limit 10000 µg/L
worst single sample: 7300 µg/L
62/88 SYR4 2012–2019
Nitrate-Nitrite
7200 µg/L 72%
of the EPA limit 10000 µg/L
worst single sample: 7300 µg/L
25/37 SYR4 2012–2019
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
 19/19 SYR4 2012–2019
Arsenic
9.45 µg/L 95%
of the EPA limit 10 µg/L
worst single sample: 10 µg/L
12/17 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Lithium
70.7 µg/L
No EPA limit set
 10/12 UCMR-5 2025
Combined Uranium
7 µg/L 23%
of the EPA limit 30 µg/L
 9/12 SYR4 2012–2019
Barium
139.5 µg/L 7%
of the EPA limit 2000 µg/L
worst single sample: 150 µg/L
8/8 SYR4 2013–2017
Selenium
5.75 µg/L 12%
of the EPA limit 50 µg/L
worst single sample: 7 µg/L
6/8 SYR4 2013–2017
Bromoform
4.02 µg/L
No EPA limit set
worst single sample: 4.4 µg/L
5/8 SYR4 2013–2019
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 5/8 SYR4 2013–2017
TTHM
4.02 µg/L 5%
of the EPA limit 80 µg/L
worst single sample: 4.4 µg/L
5/6 SYR4 2014–2019
Copper
2.9 µg/L 0.2%
of the EPA limit 1300 µg/L
worst single sample: 3 µg/L
3/16 SYR4 2012–2019
Gross Beta Particle Activity
4.598 pCi/L
No EPA limit set
worst single sample: 4.62 pCi/L
3/8 SYR4 2012–2019
Combined Radium (-226 And -228)
1.038 pCi/L 21%
of the EPA limit 5 pCi/L
worst single sample: 1.04 pCi/L
2/9 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
1.6 µg/L 27%
of the EPA limit 6 µg/L
 1/20 SYR4 2012–2019
Dibromoacetic Acid
1 µg/L
No EPA limit set
 1/6 SYR4 2014–2019
Nitrite
230 µg/L 23%
of the EPA limit 1000 µg/L
 1/21 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
1 µg/L 1.7%
of the EPA limit 60 µg/L
 1/6 SYR4 2014–2019
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDibromochloromethaneDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HEISER, ALICIA
Phone
775-623-6334
Email
[email protected]

Frequently asked questions about Winnemucca City of

Is Winnemucca City of tap water safe to drink?

EPA monitoring detected 19 contaminants in Winnemucca City of'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 Winnemucca City of's water?

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

How many people does Winnemucca City of serve?

Winnemucca City of reports serving 8,518 people in Nevada, per its EPA record.

Has Winnemucca City of had any water quality violations?

The EPA has 212 violations on file for Winnemucca City of, of which 9 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.