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POMEROY CITY OF

PWS ID: WA5368400 · Pomeroy, Washington 99347

POMEROY CITY OF serves 1,395 people in Pomeroy, Washington using Groundwater water sources. It has 101 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: POMEROY CITY OF

POMEROY CITY OF is a local-owned community water system that delivers drinking water to 1,395 residents in Pomeroy, Washington (Garfield County) through 794 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 101 total violations for this system , of which 3 (3%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 97 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Nitrate, recorded in 6 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. POMEROY CITY OF's 101 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). 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
1,395
Total Violations
101
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
794
County
Garfield
School/Daycare
No
MCL Violations
3
Monitoring Violations
97
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 6 2007
Vinyl chloride MR 4 2013
1,1-Dichloroethylene MR 4 2013
trans-1,2-Dichloroethylene MR 4 2013
1,2-Dichloroethane MR 4 2013
1,1,1-Trichloroethane MR 4 2013
Trichloroethylene MR 4 2013
Tetrachloroethylene MR 4 2013
Toluene MR 4 2013
Ethylbenzene MR 4 2013
Styrene MR 4 2013
1,2,4-Trichlorobenzene MR 4 2013
cis-1,2-Dichloroethylene MR 4 2013
DICHLOROMETHANE MR 4 2013
o-Dichlorobenzene MR 4 2013
1,2-Dichloropropane MR 4 2013
CHLOROBENZENE MR 4 2013
p-Dichlorobenzene MR 4 2013
Carbon tetrachloride MR 4 2013
1,1,2-Trichloroethane MR 4 2013
Benzene MR 4 2013
Coliform (TCR) MCL 3 2000
1,2-DIBROMO-3-CHLOROPROPANE MR 1 2002
Picloram MR 1 2022
Dinoseb MR 1 2022
2,4,5-TP MR 1 2022
Pentachlorophenol MR 1 2022
Revised Total Coliform Rule MON 1 2023
Coliform (TCR) MR 1 1997
Lead and Copper Rule MR 1 1997

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 POMEROY 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 WA5368400 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects POMEROY CITY OF under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

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
2023 Revised Total Coliform Rule MON 1 SDWIS / WA5368400 / 8000
2022 Picloram MR 1 SDWIS / WA5368400 / 2040
2022 Dinoseb MR 1 SDWIS / WA5368400 / 2041
2022 2,4,5-TP MR 1 SDWIS / WA5368400 / 2110
2022 Pentachlorophenol MR 1 SDWIS / WA5368400 / 2326
2022 Dalapon MR 1 SDWIS / WA5368400 / 2031
2013 Vinyl chloride MR 4 SDWIS / WA5368400 / 2976
2013 1,1-Dichloroethylene MR 4 SDWIS / WA5368400 / 2977
2013 trans-1,2-Dichloroethylene MR 4 SDWIS / WA5368400 / 2979
2013 1,2-Dichloroethane MR 4 SDWIS / WA5368400 / 2980
2013 1,1,1-Trichloroethane MR 4 SDWIS / WA5368400 / 2981
2013 Trichloroethylene MR 4 SDWIS / WA5368400 / 2984
2013 Tetrachloroethylene MR 4 SDWIS / WA5368400 / 2987
2013 Toluene MR 4 SDWIS / WA5368400 / 2991
2013 Ethylbenzene MR 4 SDWIS / WA5368400 / 2992

How POMEROY CITY OF Compares

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

Metric POMEROY CITY OF Washington avg Federal benchmark
Total violations 101 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 3 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,395 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is POMEROY CITY OF water safe to drink? ▼
POMEROY CITY OF (PWS ID: WA5368400) has 101 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,395 people using Groundwater sources.
How many people does POMEROY CITY OF serve? ▼
POMEROY CITY OF serves 1,395 people in Pomeroy, Washington. It is a Local-owned system using Groundwater water sources with 794 service connections.
What type of violations does POMEROY CITY OF have? ▼
POMEROY CITY OF has 101 total violations: 3 health-based violations (MCL exceedances or treatment failures), 97 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in POMEROY CITY OF water? ▼
No PFAS testing data is available for POMEROY CITY OF under the EPA's UCMR5 monitoring program.
What water source does POMEROY CITY OF use? ▼
POMEROY 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.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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