All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Bell Bay Jackson Water Association Whatcom County |
350 | 0 | 0 | |
|
Chewelah Water Dept North Stevens County |
350 | 2 | 0 | |
|
Greenwood Mobile Home Park Grays Harbor County |
350 | 2 | 0 | |
|
Honeywell Electronic Mfg LLC Spokane County |
350 | 0 | 0 | |
|
Loup Loup Ski Area Okanogan County |
350 | 1 | 0 | |
|
Olalla School Kitsap County |
350 | 0 | 0 | |
|
Quilcene School District 48 Jefferson County |
350 | 1 | 0 | |
|
Sun Tides Vista Homeowners Assn Yakima County |
350 | 0 | 0 | |
|
Winchester Mobile Homes Water Pierce County |
350 | 3 | 1 | |
|
Curlew Conservation Center Ferry County |
349 | 2 | 0 | |
|
Lake Crescent Barnes Point Clallam County |
349 | 0 | 0 | |
|
Creston Public Water Lincoln County |
348 | 1 | 0 | |
|
Hat Island Community INC Snohomish County |
348 | 1 | 0 | |
|
Lewis River RV Park Cowlitz County |
347 | 0 | 0 | |
|
Sol Duc Resort Campground Clallam County |
347 | 0 | 0 | |
|
Beaux Arts Water Department King County |
345 | 1 | 0 | |
|
Fields Spring State Park Asotin County |
344 | 0 | 0 | |
|
Lake Arrowhead Mason County |
343 | 0 | 0 | |
|
Riverbend Mobile Home Park King County |
343 | 0 | 0 | |
|
Smokiam RV Resort Grant County |
343 | 2 | 0 | |
|
Nisqually Sportsmens Club Thurston County |
341 | 1 | 0 | |
|
Keller Mallott · County |
340 | 10 | 0 | |
|
Ringold Domestic Water Corp Franklin County |
340 | 3 | 0 | |
|
Skyline Mobile Home Park Yakima County |
340 | 2 | 0 | |
|
Sultan Estates Water System Snohomish County |
340 | 0 | 0 | |
|
Washington Land Yacht Harbor Thurston County |
340 | 0 | 0 | |
|
Corral Springs Water System Douglas County |
336 | 1 | 0 | |
|
Beaver Valley General Store Jefferson County |
335 | 2 | 0 | |
|
Chelan Falls Water District Chelan County |
335 | 0 | 0 | |
|
Progressive Flat Water Assn Okanogan County |
335 | 0 | 0 | |
|
Blakely Is. Maintenance Commission San Juan County |
333 | 2 | 0 | |
|
Chattaroy Valley Mobile Estates Spokane County |
333 | 0 | 0 | |
|
Harmony Sports Clark County |
333 | 0 | 0 | |
|
Greater Bar Water District Douglas County |
330 | 0 | 0 | |
|
Kackman Creek Snohomish County |
330 | 1 | 0 | |
|
Kalispel Usk · County |
330 | 7 | 0 | |
|
Lackamas Elementary School Thurston County |
330 | 0 | 0 | |
|
River Bluff Water System Spokane County |
330 | 2 | 0 | |
|
Black Lake Estates Thurston County |
329 | 0 | 0 | |
|
Coyle Jefferson County |
329 | 1 | 0 | |
|
Crane Ranch Douglas County |
329 | 0 | 0 | |
|
Emerald Lake Mason County |
329 | 0 | 0 | |
|
Hawk Acres 607 Thurston County |
328 | 0 | 0 | |
|
Lost Lake Thurston County |
328 | 0 | 0 | |
|
Port of Shelton Johns Prairie Mason County |
328 | 0 | 0 | |
|
Ritchie Brothers Lewis County |
328 | 0 | 0 | |
|
Nine Mile Resort Spokane County |
327 | 0 | 0 | |
|
Pleasant Forest Camping Club Thurston County |
327 | 1 | 0 | |
|
Crockett Lake Water District Island County |
325 | 1 | 0 | |
|
Harmony Grade School Whatcom County |
325 | 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.