Public water system · WA5341800
ActiveCedar River Water & Sewer District
At a glance
Cedar River Water & Sewer District (PWSID WA5341800) is an active community water system in King County, Washington. It reports serving 28,671 people through 10,930 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
28,671
Service connections
10,930
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Cedar River Water & Sewer District compare with other water systems in King County?
By EPA's size categories, Cedar River Water & Sewer District is a large system (10,001 to 100,000 people). King County has 214 active public water systems. Its population served is about 85% above the county average of 15,523 people per system, and accounts for 0.9% of the 3,321,960 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 Cedar River Water & Sewer District is about 4.3 times 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 130 Washington systems (2.8%) list purchased surface water as their primary source.
Who owns and regulates Cedar River Water & Sewer District?
EPA lists Cedar River Water & Sewer 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. 58 of the 214 active systems in King County (27%) are also owned by a local government.
Does Cedar River Water & Sewer District have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Cedar River Water & Sewer District. For the latest compliance status, check EPA ECHO for current compliance history.
Cedar River Water & Sewer District: frequently asked questions
Who runs Cedar River Water & Sewer District?
Cedar River Water & Sewer District (PWSID WA5341800) is a community water system owned by a local government. It is regulated by the WA state drinking water program.
How many people does Cedar River Water & Sewer District serve?
Cedar River Water & Sewer District reports serving 28,671 people through 10,930 service connections in King County, Washington.
Where does Cedar River Water & Sewer District get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Cedar River Water & Sewer District have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Cedar River Water & Sewer 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. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the WA state drinking water program.
Where can I find Cedar River Water & Sewer District's water quality report?
As a community water system, Cedar River Water & Sewer 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 King County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Seattle Public Utilities | King | 1,161,961 | Community | Surface water |
| Bellevue City of | King | 321,349 | Community | Purchased surface water |
| Kent Water Department | King | 166,421 | Community | Purchased surface water |
| Redmond Water System City of | King | 163,335 | Community | Purchased surface water |
| Lakehaven Water and Sewer District | King | 148,809 | Community | Purchased surface water |
| Renton City of | King | 108,091 | 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, “Cedar River Water & Sewer District, PWSID WA5341800, Washington”, https://aquacensus.com/water-systems/washington/cedar-river-water-sewer-district-wa5341800 (data as of October 1, 2026).