Public water system · WA5303250
ActiveAsotin Water Dept
At a glance
Asotin Water Dept (PWSID WA5303250) is an active community water system in Asotin County, Washington. It reports serving 2,531 people through 587 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in September 2000.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,531
Service connections
587
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Asotin Water Dept compare with other water systems in Asotin County?
By EPA's size categories, Asotin Water Dept is a small system (501 to 3,300 people). Asotin County has 7 active public water systems, and Asotin Water Dept is the 2nd-largest of them by population served. Its population served is about 29% below the county average of 3,575 people per system, and accounts for 10% of the 25,022 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 Asotin Water Dept is about 62% 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 Asotin Water Dept?
EPA lists Asotin Water Dept 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 7 active systems in Asotin County (29%) are also owned by a local government.
Does Asotin Water Dept have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in September 2000. The violations listed here began between October 1979 and September 2000. By type: 5 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 6 as archived and 1 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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 |
|---|---|---|---|---|
| 2000-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1997-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1995-03-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1993-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-03-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1979-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 7 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.
Asotin Water Dept: frequently asked questions
Who runs Asotin Water Dept?
Asotin Water Dept (PWSID WA5303250) is a community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does Asotin Water Dept serve?
Asotin Water Dept reports serving 2,531 people through 587 service connections in Asotin County, Washington.
Where does Asotin Water Dept 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 Asotin Water Dept have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in September 2000. 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 Asotin Water Dept'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. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in September 2000. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Asotin Water Dept's water quality report?
As a community water system, Asotin Water Dept 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 Asotin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| PUD #1 of Asotin County | Asotin | 21,930 | Community | Groundwater |
| Fields Spring State Park | Asotin | 344 | Transient non-community | Groundwater |
| Chief Timothy Park | Asotin | 160 | Transient non-community | Groundwater |
| Beamers Landing | Asotin | 31 | Transient non-community | Groundwater |
| Grand Ronde Ranches #1 | Asotin | 20 | Transient non-community | Groundwater |
| Blue Mountain Homesites | Asotin | 6 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Asotin Water Dept, PWSID WA5303250, Washington”, https://aquacensus.com/water-systems/washington/asotin-water-dept-wa5303250 (data as of October 1, 2026).