Public water system · WA5368400
ActivePomeroy City of
At a glance
City of Pomeroy (PWSID WA5368400) is an active community water system in Garfield County, Washington. It reports serving 1,395 people through 794 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,395
Service connections
794
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Pomeroy compare with other water systems in Garfield County?
By EPA's size categories, City of Pomeroy is a small system (501 to 3,300 people). Garfield County has 9 active public water systems, and City of Pomeroy is the largest of them by population served. Its population served is about 3.4 times the county average of 412 people per system, and accounts for 38% of the 3,712 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Pomeroy is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Washington has 2,392 active community water systems, 51% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates City of Pomeroy?
EPA lists City of Pomeroy as owned by a local government. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 9 active systems in Garfield County (22%) are also owned by a local government.
Does City of Pomeroy have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2023. The violations listed here began between July 2013 and August 2023. By type: 11 monitoring and reporting and 1 monitoring. The contaminants or rules involved are Revised Total Coliform Rule, Dinoseb, Dalapon and Pentachlorophenol. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2023-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dinosebcode 2041 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Picloramcode 2040 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Ethylbenzenecode 2992 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
City of Pomeroy: frequently asked questions
Who runs City of Pomeroy?
City of Pomeroy (PWSID WA5368400) is a community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does City of Pomeroy serve?
City of Pomeroy reports serving 1,395 people through 794 service connections in Garfield County, Washington.
Where does City of Pomeroy get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does City of Pomeroy have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2023. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is City of Pomeroy's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in August 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find City of Pomeroy's water quality report?
As a community water system, City of Pomeroy must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Garfield County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Garfield County Fairgrounds | Garfield | 1,250 | Transient non-community | Groundwater |
| Alpowa Summit Rest Area | Garfield | 801 | Transient non-community | Groundwater |
| Lower Granite Lock & Dam | Garfield | 120 | Non-transient non-community | Groundwater |
| Usace Illia Residential Area | Garfield | 46 | Community | Groundwater |
| Hiway Trailer Court | Garfield | 36 | Community | Groundwater |
| Dye Seed Ranch 1 | Garfield | 30 | Transient non-community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Pomeroy City of, PWSID WA5368400, Washington”, https://aquacensus.com/water-systems/washington/pomeroy-city-of-wa5368400 (data as of October 1, 2026).