All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Wolf Den Restaurant Wapato · County |
462 | 1 | 0 | |
|
Dungeness Bay Plat Clallam County |
461 | 1 | 0 | |
|
Hartstene Pointe Mason County |
460 | 0 | 0 | |
|
Penn Cove Water and Sewer District Island County |
460 | 1 | 0 | |
|
Wilkshire Lane Water District INC Snohomish County |
460 | 0 | 0 | |
|
Dugualla Community INC Island County |
459 | 4 | 0 | |
|
Chehalis Livestock Auction & Cafe Lewis County |
457 | 0 | 0 | |
|
Wandering Creek Homeowners Assoc Snohomish County |
457 | 2 | 0 | |
|
Cresap Bay Park and Campground Cowlitz County |
456 | 0 | 0 | |
|
Chinook Estates Pierce County |
455 | 0 | 0 | |
|
Paradise Lewis County |
454 | 0 | 0 | |
|
Thunderbird Park Snohomish County |
454 | 1 | 0 | |
|
Black Diamond Water District Clallam County |
452 | 3 | 0 | |
|
Country Manor Mobile Home Park Clark County |
450 | 0 | 0 | |
|
Delta Water Association Whatcom County |
450 | 1 | 0 | |
|
Finley Elementary School (new) Benton County |
450 | 3 | 0 | |
|
Maple Lane Behavioral Health Thurston County |
450 | 3 | 0 | |
|
Panorama Point Campground Whatcom County |
450 | 1 | 0 | |
|
Vaughn Elementary School Pierce County |
450 | 0 | 0 | |
|
Carrolls Water Assn Cowlitz County |
449 | 0 | 0 | |
|
Port of Royal Slope Grant County |
447 | 0 | 0 | |
|
Skagit CO Pud Alger Skagit County |
446 | 1 | 0 | |
|
Nespelem Agency Nespelem · County |
445 | 9 | 0 | |
|
Rosedale Heights Trailer Park Pierce County |
444 | 0 | 0 | |
|
Bevin Lake Rest Area Lewis County |
443 | 0 | 0 | |
|
Pioneer Water Company Spokane County |
443 | 4 | 0 | |
|
Doe Bay Water Users Assoc San Juan County |
442 | 1 | 0 | |
|
Villa Grove Thurston County |
442 | 0 | 0 | |
|
Bridgeport State Park Okanogan County |
441 | 0 | 0 | |
|
Grace Bible Church Kitsap County |
436 | 0 | 0 | |
|
Combined Water System Island County |
435 | 2 | 0 | |
|
Maplewood Addition Water Coop King County |
435 | 0 | 0 | |
|
Ryderwood Improvement & Service AS Cowlitz County |
434 | 1 | 0 | |
|
Four Lakes Water District 10 Spokane County |
433 | 1 | 0 | |
|
Hmc Management Water System Pierce County |
432 | 1 | 0 | |
|
Craven Farm Water System Snohomish County |
431 | 1 | 0 | |
|
Seven Bays Estates Unlimited Lincoln County |
431 | 1 | 0 | |
|
Echo Glen Childrens Center King County |
430 | 1 | 0 | |
|
Royal Water District Grant County |
430 | 1 | 0 | |
|
Riverside Town of Okanogan County |
429 | 5 | 1 | |
|
Hawley Hills 686 Thurston County |
425 | 0 | 0 | |
|
Saratoga Beach Owners Assn Island County |
425 | 2 | 1 | |
|
Silver Lake Water Island County |
425 | 1 | 0 | |
|
Cispus Environmental Center Lewis County |
423 | 0 | 0 | |
|
Crosswoods Water System Island County |
420 | 1 | 0 | |
|
Index Water Dept Snohomish County |
420 | 3 | 0 | |
|
Big Bend Landowners Association Snohomish County |
419 | 0 | 0 | |
|
Henderson Boulevard Thurston County |
418 | 0 | 0 | |
|
Miracle Ranch Kitsap County |
418 | 1 | 0 | |
|
Skookum Chuck Water Association Whatcom County |
415 | 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.