All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Suncadia Resort Kittitas County |
2,640 | 1 | 0 | |
|
Blyn 7 Cedars Consolidated Sequim · County |
2,630 | 1 | 0 | |
|
Chewelah Water Dept South Stevens County |
2,615 | 2 | 0 | |
|
Camano Water Association Island County |
2,592 | 1 | 0 | |
|
Lake Wenatchee State Park South SI Chelan County |
2,591 | 1 | 0 | |
|
Asotin Water Dept Asotin County |
2,531 | 0 | 0 | |
|
Johnston Ridge Observatory Skamania County |
2,506 | 0 | 0 | |
|
Skokomish Park Lower Loop County |
2,503 | 1 | 1 | |
|
Stevens CO Pud Loon Lake Stevens County |
2,487 | 1 | 0 | |
|
Malaga Water District Chelan County |
2,478 | 0 | 0 | |
|
Kitsap Memorial State PK Kitsap County |
2,438 | 0 | 0 | |
|
Chelan CO Pud Chelan Ridge Chelan County |
2,429 | 0 | 0 | |
|
Nooksack Water Dept Whatcom County |
2,427 | 0 | 0 | |
|
Willapa Valley Water District Pacific County |
2,425 | 0 | 0 | |
|
Belfair State Park Mason County |
2,411 | 0 | 0 | |
|
Carnation Water System City of King County |
2,400 | 1 | 0 | |
|
Cherokee Bay Community Club INC King County |
2,400 | 1 | 0 | |
|
Swinomish Casino & Lodge La Conner · County |
2,400 | 0 | 0 | |
|
Soap Lake Water Dept Grant County |
2,399 | 0 | 0 | |
|
Tonasket Water System Okanogan County |
2,398 | 0 | 0 | |
|
Sprague Lake WB Rest Area Lincoln County |
2,397 | 0 | 0 | |
|
Ione Water Dept Pend Oreille County |
2,395 | 1 | 0 | |
|
Boistfort Valley Lewis County |
2,389 | 0 | 0 | |
|
Glacier Water District Whatcom County |
2,383 | 1 | 0 | |
|
Pacific Beach/moclips Grays Harbor County |
2,372 | 2 | 0 | |
|
Crescent Water Assn Clallam County |
2,360 | 2 | 0 | |
|
Timberlake Community Club INC Mason County |
2,337 | 0 | 0 | |
|
Badger Mountain Irrigation District Benton County |
2,331 | 2 | 0 | |
|
Angel of the Winds Arlington · County |
2,303 | 5 | 0 | |
|
Hood Park Walla Walla County |
2,283 | 0 | 0 | |
|
Jackson Park Naval Hospital Kitsap County |
2,277 | 1 | 0 | |
|
White River Entrance Pierce County |
2,277 | 1 | 0 | |
|
East Entrance MT Rainier Pierce County |
2,263 | 0 | 0 | |
|
Wanapum State Park Kittitas County |
2,263 | 0 | 0 | |
|
White River Campground #11 Pierce County |
2,263 | 1 | 0 | |
|
Blake Island State Park Wtr Kitsap County |
2,260 | 1 | 0 | |
|
Valley Water System Pierce County |
2,259 | 0 | 0 | |
|
Alpine Water District Chelan County |
2,255 | 3 | 1 | |
|
West Kitsap Kitsap County |
2,248 | 1 | 0 | |
|
Kittitas City of Kittitas County |
2,247 | 0 | 0 | |
|
Darrington Town of Snohomish County |
2,246 | 1 | 0 | |
|
Sunland Water District Clallam County |
2,235 | 0 | 0 | |
|
Washington Corrections Center Mason County |
2,223 | 0 | 0 | |
|
Hurricane Ridge Clallam County |
2,221 | 1 | 0 | |
|
Bridgeport City of Douglas County |
2,214 | 0 | 0 | |
|
North Spokane Irrigation District 8 Spokane County |
2,214 | 0 | 0 | |
|
Cle Elum Water Department Kittitas County |
2,213 | 2 | 0 | |
|
Shelter Bay Community INC Skagit County |
2,212 | 3 | 1 | |
|
Hutchinson Irrigation Dist #16 Spokane County |
2,209 | 0 | 0 | |
|
Three Lakes Water Association Snohomish County |
2,198 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.