All water systems in Washington
1,921 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Cougar Rock Campground Pierce County |
9,722 | 0 | 0 | |
|
Sun Lakes State Park Grant County |
4,858 | 0 | 0 | |
|
Moran State Park-Mountain Lake San Juan County |
4,804 | 0 | 0 | |
|
Moran State Park Summit Lake San Juan County |
4,803 | 0 | 0 | |
|
Moran State Park-Cascade Lake San Juan County |
4,783 | 0 | 0 | |
|
Indian John Rest Area (eb/wb) Kittitas County |
4,726 | 1 | 0 | |
|
Gorge Amphitheatre Grant County |
4,219 | 0 | 0 | |
|
Paradise Pierce County |
4,165 | 0 | 0 | |
|
Toutle River Rest Area Nb/sb Cowlitz County |
3,590 | 1 | 0 | |
|
Millersylvania State Park Thurston County |
3,456 | 1 | 0 | |
|
Sprague Lake EB Rest Area Lincoln County |
3,187 | 0 | 0 | |
|
Twanoh State Park Mason County |
3,173 | 0 | 0 | |
|
Maytown Rest Area Thurston County |
3,134 | 0 | 0 | |
|
Box Canyon Pierce County |
3,099 | 0 | 0 | |
|
Schrag Eb/wb Rest Areas Adams County |
3,096 | 1 | 0 | |
|
Sunrise NO 12 Pierce County |
3,018 | 1 | 0 | |
|
Dosewallips State Park Jefferson County |
2,941 | 1 | 0 | |
|
Steamboat Rock State Park #1 Grant County |
2,907 | 0 | 0 | |
|
Lake Wenatchee State Park South SI Chelan County |
2,591 | 1 | 0 | |
|
Johnston Ridge Observatory Skamania County |
2,506 | 0 | 0 | |
|
Skokomish Park Lower Loop County |
2,503 | 1 | 1 | |
|
Kitsap Memorial State PK Kitsap County |
2,438 | 0 | 0 | |
|
Belfair State Park Mason County |
2,411 | 0 | 0 | |
|
Sprague Lake WB Rest Area Lincoln County |
2,397 | 0 | 0 | |
|
Hood Park Walla Walla County |
2,283 | 0 | 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 | |
|
Hurricane Ridge Clallam County |
2,221 | 1 | 0 | |
|
Limekiln State Park San Juan County |
2,149 | 1 | 0 | |
|
Ryegrass Eb/wb Rest Area Kittitas County |
2,114 | 1 | 0 | |
|
Pearrygin Lake State Park Both CG Okanogan County |
2,103 | 1 | 0 | |
|
Ohanapecosh Pierce County |
2,092 | 0 | 0 | |
|
End of Trail II Oakville · County |
2,000 | 1 | 1 | |
|
Flaming Geyser State Park King County |
1,947 | 0 | 0 | |
|
Scatter Creek Rest Area Thurston County |
1,858 | 1 | 0 | |
|
Nason Creek Rest Area Chelan County |
1,855 | 1 | 0 | |
|
Camano Island State Park Island County |
1,718 | 2 | 0 | |
|
Ike Kinswa State Park Lewis County |
1,680 | 0 | 0 | |
|
Bi Zi Farms Clark County |
1,676 | 0 | 0 | |
|
Okanogan Neighbors Okanogan County |
1,600 | 0 | 0 | |
|
MT Baker Ski Area White Salmon Whatcom County |
1,560 | 0 | 0 | |
|
Potholes State Park Grant County |
1,456 | 0 | 0 | |
|
Fort Ebey State Park Island County |
1,443 | 0 | 0 | |
|
Fort Spokane Campground Lincoln County |
1,436 | 0 | 0 | |
|
Beacon Rock State Park 1 Skamania County |
1,375 | 0 | 0 | |
|
Colville Fuels Noisy Waters Nespelem · County |
1,350 | 1 | 0 | |
|
Chelan County Fairground Chelan County |
1,335 | 1 | 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.