Public water system · WA5335550
ActiveInchelium Water District
At a glance
Inchelium Water District (PWSID WA5335550) is an active community water system in Ferry County, Washington. It reports serving 540 people through 246 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, 6 are health-based, and the most recent began in May 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
540
Service connections
246
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Inchelium Water District compare with other water systems in Ferry County?
By EPA's size categories, Inchelium Water District is a small system (501 to 3,300 people). Ferry County has 33 active public water systems, and Inchelium Water District is the 3rd-largest of them by population served. Its population served is about 197% above the county average of 182 people per system, and accounts for 9% of the 5,998 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 Inchelium Water District 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 Inchelium Water District?
EPA lists Inchelium Water District 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. 4 of the 33 active systems in Ferry County (12%) are also owned by a local government.
Does Inchelium Water District have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in May 2023. The violations listed here began between January 2008 and May 2023. By type: 6 contaminant level above the legal limit, 3 public notice, recordkeeping or other, 2 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Arsenic (5 of them). 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 |
|---|---|---|---|---|
| 2023-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2020-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2019-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Arseniccode 1005 | Yes | Resolved |
| 2012-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Arseniccode 1005 | Yes | Resolved |
| 2012-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Arseniccode 1005 | Yes | Resolved |
| 2012-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Arseniccode 1005 | Yes | Resolved |
| 2012-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Arseniccode 1005 | Yes | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | 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.
Inchelium Water District: frequently asked questions
Who runs Inchelium Water District?
Inchelium Water District (PWSID WA5335550) is a community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does Inchelium Water District serve?
Inchelium Water District reports serving 540 people through 246 service connections in Ferry County, Washington.
Where does Inchelium Water District 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 Inchelium Water District have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in May 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 Inchelium Water District'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, 6 are health-based, and the most recent began in May 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 Inchelium Water District's water quality report?
As a community water system, Inchelium Water District 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 Ferry County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Republic City of | Ferry | 1,673 | Community | Groundwater |
| Curlew Lake State Park | Ferry | 779 | Transient non-community | Groundwater |
| Hartmans Log Cabin Resort Inc. | Ferry | 397 | Transient non-community | Groundwater |
| Curlew Conservation Center | Ferry | 349 | Community | Groundwater |
| Curlew Water & Sewer District | Ferry | 316 | Community | Groundwater |
| Ferry County Fairgrounds | Ferry | 227 | 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, “Inchelium Water District, PWSID WA5335550, Washington”, https://aquacensus.com/water-systems/washington/inchelium-water-district-wa5335550 (data as of October 1, 2026).