All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Plymouth Water District Benton County |
288 | 2 | 0 | |
|
Maggie Lake Water District Mason County |
287 | 1 | 0 | |
|
Camano Hills Water Company INC Island County |
286 | 1 | 0 | |
|
Farm Boy Drive in Thurston County |
285 | 0 | 0 | |
|
Goss Lake Park Community Island County |
285 | 1 | 0 | |
|
Cedar Glen Mobile Home Park Kitsap County |
284 | 0 | 0 | |
|
Dashmesh Petroleum Lewis County |
284 | 1 | 0 | |
|
Port of Shelton Sanderson Field Mason County |
283 | 0 | 0 | |
|
Project Cougar Whitman County |
283 | 3 | 1 | |
|
Indian Hills Estates Kitsap County |
282 | 1 | 0 | |
|
Outlook Community Water Yakima County |
282 | 0 | 0 | |
|
Camp Nor Wester San Juan County |
281 | 1 | 0 | |
|
Federation Forest State Park King County |
281 | 0 | 0 | |
|
Yale Village / Saddle Dam Park Cowlitz County |
281 | 0 | 0 | |
|
Griffith Priday State Park Grays Harbor County |
280 | 0 | 0 | |
|
Marys Garden Yakima County |
280 | 0 | 0 | |
|
Walla Walla Airport Walla Walla County |
280 | 0 | 0 | |
|
Whitstran Elementary School Benton County |
280 | 1 | 0 | |
|
Yakima Training Center Pomona Yakima County |
280 | 1 | 0 | |
|
Kayak Point Golf Course Snohomish County |
279 | 0 | 0 | |
|
Butler Cove Water Company Thurston County |
278 | 0 | 0 | |
|
Mill a Water CO Skamania County |
278 | 0 | 0 | |
|
Bickleton Community Klickitat County |
277 | 0 | 0 | |
|
Newhalem Water System Whatcom County |
277 | 1 | 0 | |
|
Perry Lewis County |
277 | 4 | 1 | |
|
River Park Thurston County |
277 | 0 | 0 | |
|
Sun Country Estates 1-2-3 Kittitas County |
277 | 1 | 0 | |
|
Raspberry Ridge Water Association Whatcom County |
276 | 0 | 0 | |
|
All Saints Camp Pierce County |
275 | 0 | 0 | |
|
Fargher Lake Grocery Clark County |
275 | 0 | 0 | |
|
Highlands Utility District King County |
275 | 0 | 0 | |
|
Neilton Meadowland WD 8 a Grays Harbor County |
275 | 1 | 0 | |
|
West Ridge Water System Island County |
275 | 0 | 0 | |
|
Spring Glen Association King County |
273 | 0 | 0 | |
|
Stewarts Meats Thurston County |
272 | 0 | 0 | |
|
Foothills Water Association King County |
271 | 0 | 0 | |
|
View Ridge Heights Mason County |
271 | 0 | 0 | |
|
Bethel Water CO Pierce County |
270 | 1 | 0 | |
|
Mary M Knight School Mason County |
270 | 0 | 0 | |
|
Spangle Town of Spokane County |
270 | 1 | 0 | |
|
Deer Meadows Water Company INC Lincoln County |
268 | 1 | 0 | |
|
Keanland Park 761 Thurston County |
268 | 0 | 0 | |
|
Navy Yard Park Kitsap County |
268 | 1 | 0 | |
|
Scatter Creek Ranch 760 Thurston County |
268 | 0 | 0 | |
|
Green Acres Mattawa Grant County |
267 | 0 | 0 | |
|
Lazy Acres 351 Thurston County |
267 | 0 | 0 | |
|
Skamokawa Water System Wahkiakum County |
267 | 1 | 0 | |
|
Avalon Links Golf Club Skagit County |
266 | 0 | 0 | |
|
Beaver Clallam County |
265 | 0 | 0 | |
|
Green Island Hills Water Assn Island County |
265 | 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.