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.
14
health-based violations
958
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2023-07-01 → 2023-09-30 |
| MCL | Health-based | Resolved | 2010-07-01 → 2010-07-31 |
| MCL | Health-based | Archived | 2006-07-01 → 2006-07-31 |
| MCL | Health-based | Archived | 2006-07-01 → 2006-07-31 |
| MCL | Health-based | Archived | 2005-07-01 → 2005-07-31 |
| MCL | Health-based | Archived | 2005-07-01 → 2005-07-31 |
| MCL | Health-based | Resolved | 2003-12-01 → 2003-12-31 |
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.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Arsenic | 20.9 µg/L 209% of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 130 µg/L | 82/82 | SYR4 | 2012–2019 |
| Nitrate | 700 µg/L 7% of the EPA limit 10000 µg/L
worst single sample: 830 µg/L | 46/62 | SYR4 | 2012–2019 |
| Bromoform | 7.575 µg/L No EPA limit set
worst single sample: 8.8 µg/L | 22/31 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.5 µg/L No EPA limit set
worst single sample: 7 µg/L | 21/31 | SYR4 | 2012–2019 |
| TTHM | 18.81 µg/L 24% of the EPA limit 80 µg/L
worst single sample: 19 µg/L | 20/30 | SYR4 | 2012–2019 |
| Copper | 189 µg/L 15% of the EPA limit 1300 µg/L
worst single sample: 270 µg/L | 19/23 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 2.825 µg/L No EPA limit set
worst single sample: 2.9 µg/L | 16/23 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 2.825 µg/L 4.7% of the EPA limit 60 µg/L
worst single sample: 2.9 µg/L | 16/23 | SYR4 | 2012–2019 |
| Bromodichloromethane | 3.71 µg/L No EPA limit set
worst single sample: 4.2 µg/L | 15/31 | SYR4 | 2012–2019 |
| Fluoride | 545 µg/L 14% of the EPA limit 4000 µg/L
worst single sample: 600 µg/L | 12/18 | SYR4 | 2012–2019 |
| Combined Uranium | 25.5 µg/L 85% of the EPA limit 30 µg/L
worst single sample: 27 µg/L | 11/11 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 551.5 µg/L 5.5% of the EPA limit 10000 µg/L
worst single sample: 700 µg/L | 10/15 | SYR4 | 2012–2019 |
| Chloroform | 1.66 µg/L No EPA limit set
worst single sample: 1.8 µg/L | 8/31 | SYR4 | 2012–2019 |
| Barium | 97.7 µg/L 4.9% of the EPA limit 2000 µg/L
worst single sample: 110 µg/L | 7/7 | SYR4 | 2012–2019 |
| Gross Beta Particle Activity | 8.593 pCi/L No EPA limit set
worst single sample: 8.65 pCi/L | 7/7 | SYR4 | 2012–2015 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L | 7/7 | LCR | 2025 |
| Combined Radium (-226 And -228) | 2.327 pCi/L 47% of the EPA limit 5 pCi/L
worst single sample: 2.65 pCi/L | 5/7 | SYR4 | 2012–2019 |
| Lead | 4.4 µg/L 29% of the EPA limit 15 µg/L
worst single sample: 5 µg/L | 5/19 | SYR4 | 2012–2019 |
| Lithium | 38 µg/L No EPA limit set | 4/4 | UCMR-5 | 2024 |
| Di(2-ethylhexyl) Phthalate | 3.663 µg/L 61% of the EPA limit 6 µg/L
worst single sample: 4 µg/L | 3/18 | SYR4 | 2012–2019 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L | 1/7 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 1.2 µg/L No EPA limit set | 1/23 | SYR4 | 2012–2019 |
| Ethylbenzene | 0.1100 µg/L 0% of the EPA limit 700 µg/L | 1/12 | SYR4 | 2012–2019 |
| Nitrite | 70 µg/L 7% of the EPA limit 1000 µg/L | 1/15 | SYR4 | 2012–2019 |
| Xylenes, Total | 0.5000 µg/L 0% of the EPA limit 10000 µg/L | 1/12 | SYR4 | 2012–2019 |
87 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Yerington City of
Is Yerington City of tap water safe to drink?
EPA monitoring detected 25 contaminants in Yerington 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 Yerington City of's water?
EPA monitoring detected Arsenic, Nitrate, Bromoform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.
How many people does Yerington City of serve?
Yerington City of reports serving 5,050 people in Nevada, per its EPA record.
Has Yerington City of had any water quality violations?
The EPA has 958 violations on file for Yerington City of, of which 14 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.