All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Ravensdale Water Supply King County |
389 | 1 | 0 | |
|
Tatoosh Water Company Snohomish County |
387 | 1 | 1 | |
|
Fire MT Scout Reservation Skagit County |
386 | 0 | 0 | |
|
White Bluff Water Association Franklin County |
386 | 1 | 0 | |
|
Wilson Creek Water Dept Town of Grant County |
386 | 1 | 0 | |
|
Angel of the Winds RV Resort Arlington · County |
384 | 1 | 1 | |
|
Eldorado Hills Kitsap County |
383 | 1 | 0 | |
|
Delphi Thurston County |
381 | 0 | 0 | |
|
Ponderosa Park Water System Klickitat County |
381 | 0 | 0 | |
|
Mansfield Water System Douglas County |
380 | 1 | 1 | |
|
Omak Hud Nespelem · County |
380 | 9 | 0 | |
|
Cascade Valley Water District Grant County |
379 | 0 | 0 | |
|
Gardiner Lud 1 Jefferson County |
379 | 1 | 0 | |
|
Parkwood Mfd Housing Community Clallam County |
378 | 1 | 0 | |
|
Timberline Village 628 Lewis County |
378 | 0 | 0 | |
|
Sun Mountain Resort Okanogan County |
376 | 2 | 0 | |
|
Cuyamaca Olympia · County |
375 | 7 | 0 | |
|
Spo CO Water Dist 3 Sys 8 Spokane County |
375 | 0 | 0 | |
|
West Prairie Village Spokane County |
375 | 0 | 0 | |
|
Zirkle Paterson Ranch Benton County |
374 | 0 | 0 | |
|
Almira Water System Lincoln County |
372 | 0 | 0 | |
|
Marcus Whitman School Yakima County |
370 | 0 | 0 | |
|
Quinault River Inn Lake Quinault · County |
370 | 2 | 0 | |
|
Whatcom Meadows Whatcom County |
370 | 1 | 0 | |
|
Elmer City Water System Okanogan County |
368 | 2 | 0 | |
|
Hood Canal Mason County |
368 | 0 | 0 | |
|
Lazy C Jefferson County |
367 | 1 | 0 | |
|
Tahuya River Valley Water District Mason County |
367 | 1 | 0 | |
|
Uniontown Water Works Whitman County |
366 | 0 | 0 | |
|
Custer Water Association Whatcom County |
365 | 0 | 0 | |
|
JR Simplot CO Grant County |
365 | 1 | 0 | |
|
Stevens CO Pud Riverside Spokane County |
365 | 0 | 0 | |
|
Upper Skagit Sedro Wooley · County |
365 | 1 | 0 | |
|
Alpine Hills Thurston County |
363 | 0 | 0 | |
|
Edgewater Rocky Pond Douglas County |
363 | 0 | 0 | |
|
Easton Water District Kittitas County |
362 | 0 | 0 | |
|
Weyerhaeuser Elementary School Pierce County |
362 | 0 | 0 | |
|
Golden Plains MHP #1 Adams County |
360 | 2 | 0 | |
|
Hiapark Mason County |
360 | 1 | 0 | |
|
Hillcrest Food Mart Lewis County |
360 | 0 | 0 | |
|
Lake Lucinda Community Club Thurston County |
360 | 0 | 0 | |
|
Mains Farm Property Owners Clallam County |
358 | 1 | 0 | |
|
Spo CO Water Dist 3 Sys 6 Spokane County |
358 | 0 | 0 | |
|
Lisecc Whatcom County |
357 | 2 | 1 | |
|
Wsdp Riverside SP Equestrian Spokane County |
356 | 1 | 0 | |
|
Canterbrook Village Apartments Pierce County |
355 | 0 | 0 | |
|
Sierra Water System Pierce County |
355 | 2 | 0 | |
|
Chiwawa Communities Assn Chelan County |
352 | 1 | 0 | |
|
Vista del Rio Mobile Home Park Clark County |
352 | 0 | 0 | |
|
Strathview Water District 16 Spokane County |
351 | 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 currently 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.