All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Bingen Water Dept Klickitat County |
1,758 | 1 | 0 | |
|
Wallula Dodd Water System Walla Walla County |
1,757 | 0 | 0 | |
|
Davenport Water Division Lincoln County |
1,750 | 0 | 0 | |
|
Basin City Water Sewer District Franklin County |
1,740 | 5 | 0 | |
|
Entiat City of Chelan County |
1,730 | 1 | 0 | |
|
Ritzville Water Department Adams County |
1,725 | 2 | 0 | |
|
Clallam Bay Sekiu Clallam County |
1,719 | 0 | 0 | |
|
Camano Island State Park Island County |
1,718 | 2 | 0 | |
|
Indianola Water Kitsap County |
1,705 | 1 | 0 | |
|
Maxwelton Water System Island County |
1,700 | 3 | 0 | |
|
Evergreen Clallam County Pud 1 Clallam County |
1,694 | 1 | 0 | |
|
Ike Kinswa State Park Lewis County |
1,680 | 0 | 0 | |
|
Bi Zi Farms Clark County |
1,676 | 0 | 0 | |
|
Republic City of Ferry County |
1,673 | 1 | 0 | |
|
Cathlamet Water Dept Wahkiakum County |
1,636 | 2 | 0 | |
|
Scott Lake Thurston County |
1,604 | 1 | 0 | |
|
River Bend HOA King County |
1,603 | 0 | 0 | |
|
Carnhope Irrigation District 7 Spokane County |
1,602 | 1 | 0 | |
|
Okanogan Neighbors Okanogan County |
1,600 | 0 | 0 | |
|
Taholah Tahola · County |
1,600 | 4 | 2 | |
|
MT Baker Ski Area White Salmon Whatcom County |
1,560 | 0 | 0 | |
|
Consolidated Irrigation Dist 14 Walla Walla County |
1,555 | 0 | 0 | |
|
Mossyrock Public Utility City of Lewis County |
1,553 | 1 | 0 | |
|
Lucky Eagle Casino Oakville · County |
1,550 | 5 | 3 | |
|
Naval Base Kitsap at Keyport Kitsap County |
1,540 | 0 | 0 | |
|
Lake Minterwood Pierce County |
1,539 | 0 | 0 | |
|
Port Gamble Sklallam Port Gamble · County |
1,509 | 1 | 0 | |
|
Tapps Island Water System Pierce County |
1,501 | 4 | 1 | |
|
Port Susan Camp Club #1 Marysville · County |
1,500 | 2 | 0 | |
|
Squaxin Consolidated Shelton · County |
1,500 | 6 | 1 | |
|
Blanchard Edison Water Assn. Inc. Skagit County |
1,480 | 0 | 0 | |
|
Sunland Estates Homeowners Assn Grant County |
1,480 | 1 | 0 | |
|
Tieton Water Dept City of Yakima County |
1,475 | 0 | 0 | |
|
Hogans Corner Grays Harbor County |
1,458 | 1 | 0 | |
|
Potholes State Park Grant County |
1,456 | 0 | 0 | |
|
Coulee Dam Water Dept Okanogan County |
1,454 | 0 | 0 | |
|
Fort Ebey State Park Island County |
1,443 | 0 | 0 | |
|
Graham Hill Mutual Water CO INC Pierce County |
1,440 | 1 | 0 | |
|
Point Roberts Water District NO 4 Whatcom County |
1,440 | 1 | 1 | |
|
Fort Spokane Campground Lincoln County |
1,436 | 0 | 0 | |
|
Grand Coulee Water Dept City of Grant County |
1,428 | 0 | 0 | |
|
Rosario San Juan County |
1,426 | 0 | 0 | |
|
High Valley Country Club Lewis County |
1,425 | 1 | 0 | |
|
Reardan Town of Lincoln County |
1,418 | 1 | 0 | |
|
Langley City of Island County |
1,416 | 1 | 0 | |
|
Whatcom County Water Dist #7 Whatcom County |
1,410 | 0 | 0 | |
|
Chelan CO Pud1 Peshastin Chelan County |
1,397 | 1 | 0 | |
|
Pomeroy City of Garfield County |
1,395 | 1 | 0 | |
|
Lake Josephine Riviera Pierce County |
1,380 | 0 | 0 | |
|
Beacon Rock State Park 1 Skamania County |
1,375 | 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.