All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Upper Preston Water Assn King County |
150 | 0 | 0 | |
|
Wagon Wheel Island County |
150 | 1 | 0 | |
|
West 15 Domestic Water Assn Franklin County |
150 | 2 | 0 | |
|
Hidden Haven Mobile Home Park Mason County |
149 | 1 | 0 | |
|
Klipchuck CG Methow RD Okanogan County |
149 | 1 | 0 | |
|
Dayton Trails Mason County |
148 | 0 | 0 | |
|
Johanson Kitsap County |
148 | 0 | 0 | |
|
Shorebrook Community Club Mason County |
148 | 1 | 0 | |
|
Valley Meadows 240 Lewis County |
148 | 0 | 0 | |
|
Crestview West Water System King County |
147 | 3 | 0 | |
|
Lwwsd Agate Heights Whatcom County |
147 | 0 | 0 | |
|
Lakes Community Church Spokane County |
147 | 1 | 0 | |
|
Potholes Home Owners Association Grant County |
147 | 0 | 0 | |
|
SR 902 Well Spokane County |
147 | 0 | 0 | |
|
Starbuck City of Columbia County |
147 | 1 | 0 | |
|
Crystal Village I-Ii-Iii Pierce County |
146 | 1 | 0 | |
|
Israel Place San Angelo Park Thurston County |
146 | 0 | 0 | |
|
Seventh Day Adventist School Yelm Thurston County |
146 | 0 | 0 | |
|
Single Tree Estates Thurston County |
146 | 0 | 0 | |
|
Wildaire Estates Thurston County |
146 | 0 | 0 | |
|
Green Mountain Mill Weyerhaeuser Cowlitz County |
145 | 0 | 0 | |
|
MUD Bay Thurston County |
145 | 0 | 0 | |
|
Thunder Ridge Water System Island County |
145 | 0 | 0 | |
|
Chehalis RV Park Lewis County |
144 | 0 | 0 | |
|
Glenwood Station Kitsap County |
144 | 0 | 0 | |
|
Inspire Development Centers Yakima County |
144 | 0 | 0 | |
|
Middle Fork Water & Sewer Lewis County |
144 | 0 | 0 | |
|
North Woods Assn Skamania County |
144 | 0 | 0 | |
|
The Village at Colockum Ridge Grant County |
144 | 1 | 0 | |
|
Cascadian Home Farm Skagit County |
143 | 0 | 0 | |
|
Driftwood Point Water System Pierce County |
143 | 0 | 0 | |
|
Hartley Brent Benton County |
143 | 0 | 0 | |
|
Lake Tuck King County |
143 | 0 | 0 | |
|
Little Tree Kitsap County |
143 | 0 | 0 | |
|
Lake Easton State Park West Kittitas County |
143 | 1 | 0 | |
|
Mainland View Manor Kitsap County |
143 | 0 | 0 | |
|
Martell Mobile Manor Kitsap County |
143 | 2 | 0 | |
|
Munn Robert Well Benton County |
143 | 0 | 0 | |
|
Oaks the Mobile Home Park San Juan County |
143 | 2 | 0 | |
|
Olympus Beach Tracts Jefferson County |
143 | 1 | 0 | |
|
ST Johns Bakery Klickitat County |
143 | 0 | 0 | |
|
Sunland Shores Clallam County |
143 | 0 | 0 | |
|
Camelot Subdivision Cowlitz County |
142 | 1 | 0 | |
|
Camp Ghormley Yakima County |
142 | 2 | 0 | |
|
Camp Robbinswold Girl Scout Mason County |
142 | 0 | 0 | |
|
High Valley Mobile Home Court Yakima County |
142 | 1 | 0 | |
|
Highland Orchards Douglas County |
142 | 0 | 0 | |
|
Manhasset Specialty Company Yakima County |
142 | 0 | 0 | |
|
Paterson Elementary School Benton County |
142 | 0 | 0 | |
|
Aston Estates Okanogan County |
141 | 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.