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Community Water System · PWS NV0000255

Yerington City Of

Yerington, Nevada 89447 - drinking water served from groundwater sources to 5,050 people, tracked in EPA SDWIS and UCMR5.

5,050
People served
966
EPA violations
14
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 966 drinking-water violations at Yerington City Of, 1% of them health-based - above the Nevada per-system average.

966
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
5,050
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Yerington City Of

Yerington City Of is a local-owned community water system that delivers drinking water to 5,050 residents in Yerington, Nevada (Lyon County) through 1,992 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 966 total violations for this system , of which 14 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 928 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Nitrate, recorded in 25 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Nevada, EPA tracks 589 public water systems serving 3,455,285 people, with 56,333 cumulative violations and 6,657 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 95.6 violations. Statewide, 50 of 57 UCMR5-tested systems have reported PFAS detections (87.7%).

Yerington City Of's 966 violations sit above the Nevada average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
5,050
Total Violations
966
Health-Based Violations
14
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,992
County
Lyon
School/Daycare
No
MCL Violations
14
Monitoring Violations
928
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 25 2023
cis-1,2-Dichloroethylene MR 23 2020
Xylenes, Total MR 23 2020
p-Dichlorobenzene MR 23 2020
1,1,1-Trichloroethane MR 23 2020
1,2-Dichloropropane MR 23 2020
Toluene MR 23 2020
Styrene MR 23 2020
1,2,4-Trichlorobenzene MR 23 2020
DICHLOROMETHANE MR 23 2020
Vinyl chloride MR 23 2020
Carbon tetrachloride MR 23 2020
Trichloroethylene MR 23 2020
CHLOROBENZENE MR 23 2020
Ethylbenzene MR 23 2020
Arsenic MR 23 2023
o-Dichlorobenzene MR 23 2020
1,2-Dichloroethane MR 23 2020
Tetrachloroethylene MR 23 2020
Benzene MR 23 2020
1,1-Dichloroethylene MR 23 2020
1,1,2-Trichloroethane MR 23 2020
trans-1,2-Dichloroethylene MR 23 2020
Di(2-ethylhexyl) phthalate MR 20 2024
Chlorine MR 19 2023
TTHM MR 18 2020
Total Haloacetic Acids (HAA5) MR 18 2020
Combined Uranium MR 14 2024
Carbofuran MR 13 2020
Glyphosate MR 13 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFDA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/23/2024 <2.00 ppt 2.00 ppt Not Detected
PFUnA 4/23/2024 <2.00 ppt 2.00 ppt Not Detected
PFDoA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 4/23/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 4/23/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 4/23/2024 <8.00 ppt 8.00 ppt Not Detected
PFOS 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 4/23/2024 <20.00 ppt 20.00 ppt Not Detected
PFHxS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/23/2024 <2.00 ppt 2.00 ppt Not Detected
NMeFOSAA 4/23/2024 <6.00 ppt 6.00 ppt Not Detected
PFDA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 4/23/2024 <7.00 ppt 7.00 ppt Not Detected
PFBA 4/23/2024 <5.00 ppt 5.00 ppt Not Detected
PFTA 4/23/2024 <8.00 ppt 8.00 ppt Not Detected
PFPeS 4/23/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
ADONA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/23/2024 <3.00 ppt 3.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Yerington City Of.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NV0000255 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Nevada Drinking Water Authority

Nevada's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find NV regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Di(2-ethylhexyl) phthalate MR 20 SDWIS / NV0000255 / 2039
2024 Combined Uranium MR 14 SDWIS / NV0000255 / 4006
2024 Consumer Confidence Rule Other 8 SDWIS / NV0000255 / 7000
2023 Nitrate MR 25 SDWIS / NV0000255 / 1040
2023 Arsenic MR 23 SDWIS / NV0000255 / 1005
2023 Chlorine MR 19 SDWIS / NV0000255 / 0999
2023 Combined Uranium MCL 4 SDWIS / NV0000255 / 4006
2020 cis-1,2-Dichloroethylene MR 23 SDWIS / NV0000255 / 2380
2020 Xylenes, Total MR 23 SDWIS / NV0000255 / 2955
2020 p-Dichlorobenzene MR 23 SDWIS / NV0000255 / 2969
2020 1,1,1-Trichloroethane MR 23 SDWIS / NV0000255 / 2981
2020 1,2-Dichloropropane MR 23 SDWIS / NV0000255 / 2983
2020 Toluene MR 23 SDWIS / NV0000255 / 2991
2020 Styrene MR 23 SDWIS / NV0000255 / 2996
2020 1,2,4-Trichlorobenzene MR 23 SDWIS / NV0000255 / 2378

How Yerington City Of Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Yerington City Of Nevada avg Federal benchmark
Total violations 966 95.6 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 14 11.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 87.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 5,050 5,866 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 589 regulated public water systems in Nevada.

Federal MCL reference, Safe Drinking Water Act thresholds
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Yerington City Of water safe to drink?
Yerington City Of (PWS ID: NV0000255) has 966 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 5,050 people using Groundwater sources.
How many people does Yerington City Of serve?
Yerington City Of serves 5,050 people in Yerington, Nevada. It is a Local-owned system using Groundwater water sources with 1,992 service connections.
What type of violations does Yerington City Of have?
Yerington City Of has 966 total violations: 14 health-based violations (MCL exceedances or treatment failures), 928 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Yerington City Of water?
No. Yerington City Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Yerington City Of use?
Yerington City Of uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from?
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.