All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Twisp Town of Okanogan County |
1,173 | 0 | 0 | |
|
Ponderosa Community Club INC Chelan County |
1,170 | 1 | 0 | |
|
Monse-Riggan Camp Okanogan County |
1,165 | 4 | 1 | |
|
Weiler-Martin Tracts Water Assn Grant County |
1,163 | 2 | 0 | |
|
Basin Water Sources INC Grant County |
1,158 | 0 | 0 | |
|
Meadowmeer Kitsap County |
1,157 | 2 | 0 | |
|
Boston Harbor Thurston County |
1,153 | 1 | 0 | |
|
Kopachuck Middle & Voyager Elem WS Pierce County |
1,150 | 2 | 0 | |
|
Skokomish Skokomish Nation · County |
1,150 | 5 | 1 | |
|
Pateros Water Department Okanogan County |
1,149 | 1 | 0 | |
|
Newberry Hill Kitsap County |
1,143 | 1 | 0 | |
|
Ashford Water District Pierce County |
1,141 | 0 | 0 | |
|
Waterville Town of Douglas County |
1,140 | 2 | 0 | |
|
Maryhill State Park Klickitat County |
1,133 | 0 | 0 | |
|
Elma Rest Area Grays Harbor County |
1,122 | 1 | 0 | |
|
Paradise Point State Park Clark County |
1,114 | 0 | 0 | |
|
Quistorff Pierce County |
1,113 | 0 | 0 | |
|
W&b Waterworks 1 Island County |
1,112 | 1 | 0 | |
|
Crescent Bar System Grant County |
1,108 | 0 | 0 | |
|
Beards Cove Mason County |
1,100 | 0 | 0 | |
|
Tekoa City of Whitman County |
1,076 | 2 | 0 | |
|
Sunshine Acres Clallam County |
1,074 | 0 | 0 | |
|
Miller Bay Kitsap County |
1,072 | 1 | 0 | |
|
Alta Lake State Park Okanogan County |
1,071 | 0 | 0 | |
|
Camano Co-Op Water & Power CO Island County |
1,071 | 1 | 0 | |
|
Wilkeson Water Department Pierce County |
1,071 | 2 | 0 | |
|
Schilter Family Farm Store Thurston County |
1,056 | 0 | 0 | |
|
Potlatch State Park Mason County |
1,055 | 1 | 0 | |
|
Holiday Ranchettes Thurston County |
1,050 | 0 | 0 | |
|
North Bonneville City of Skamania County |
1,048 | 0 | 0 | |
|
Scenic Beach State Park Kitsap County |
1,045 | 0 | 0 | |
|
Fawn Lake Maintenance Comm Mason County |
1,044 | 1 | 0 | |
|
Estates INC Clallam County |
1,043 | 1 | 0 | |
|
Spring Canyon Campground Lincoln County |
1,043 | 0 | 0 | |
|
Wilbur Town of Lincoln County |
1,040 | 4 | 0 | |
|
Bayview Beach Water District Island County |
1,035 | 3 | 1 | |
|
George City of Grant County |
1,035 | 2 | 0 | |
|
Washington Beef LLC Yakima County |
1,025 | 0 | 0 | |
|
Washington Beef LLC Toppenish · County |
1,025 | 2 | 0 | |
|
Cape George Colony Club INC Jefferson County |
1,022 | 1 | 0 | |
|
Samish Farms Water Assn Skagit County |
1,017 | 1 | 0 | |
|
Mission Ridge Ski Area Water System Chelan County |
1,009 | 1 | 0 | |
|
Orcas Landing INC San Juan County |
1,007 | 0 | 0 | |
|
Conconully State Park Okanogan County |
1,004 | 0 | 0 | |
|
Lake Quinault Grays Harbor County |
1,003 | 0 | 0 | |
|
Washington Cathedral King County |
1,001 | 0 | 0 | |
|
Allan Bros Warehouse Yakima County |
1,000 | 2 | 0 | |
|
Dungeness River Nature Center Sequim · County |
1,000 | 0 | 0 | |
|
Port Susan Camp Club #2 Marysville · County |
1,000 | 1 | 0 | |
|
Port Susan Camp Club #3 Marysville · County |
1,000 | 2 | 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.