Public water system · WA5373032
ActiveRiverwood Water System
At a glance
Riverwood Water System (PWSID WA5373032) is an active community water system in Ferry County, Washington. It reports serving 43 people through 21 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in December 2004.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
43
Service connections
21
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Riverwood Water System compare with other water systems in Ferry County?
By EPA's size categories, Riverwood Water System is a very small system (500 people or fewer). Ferry County has 33 active public water systems. Its population served is well below the county average of 182 people per system, and accounts for 0.7% 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 Riverwood Water System 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 Riverwood Water System?
EPA lists Riverwood Water System as privately owned. 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. 24 of the 33 active systems in Ferry County (73%) are also privately owned.
Does Riverwood Water System have drinking water violations?
EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in December 2004. The violations listed here began between October 1979 and December 2004. By type: 6 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 8 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2004-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2004-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1993-03-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-09-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1992-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | 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 8 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.
Riverwood Water System: frequently asked questions
Who runs Riverwood Water System?
Riverwood Water System (PWSID WA5373032) is a community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Riverwood Water System serve?
Riverwood Water System reports serving 43 people through 21 service connections in Ferry County, Washington.
Where does Riverwood Water System 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 Riverwood Water System have any drinking water violations?
EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in December 2004. 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 Riverwood Water System'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 8 violations for this system; 2 are health-based, and the most recent began in December 2004. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Riverwood Water System's water quality report?
As a community water system, Riverwood Water System 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 |
| Inchelium Water District | Ferry | 540 | 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 |
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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, “Riverwood Water System, PWSID WA5373032, Washington”, https://aquacensus.com/water-systems/washington/riverwood-water-system-wa5373032 (data as of October 1, 2026).