All water systems in Washington
4,692 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sno Pud 1 Skylite Tracts Snohomish County |
415 | 1 | 0 | |
|
Whidbey West Water Assoc. Island County |
415 | 3 | 0 | |
|
Allyn Shopping Center Mason County |
414 | 0 | 0 | |
|
Rainy Pass Rest Area Methowrd Chelan County |
413 | 0 | 0 | |
|
Washington Pass Well Methow RD Okanogan County |
413 | 0 | 0 | |
|
East Gig Harbor Water District Pierce County |
410 | 0 | 0 | |
|
Harbor Country Apartments Pierce County |
410 | 1 | 0 | |
|
Olympic Sunset West Pierce County |
410 | 0 | 0 | |
|
Taidnapam Park Lewis County |
410 | 0 | 0 | |
|
Berthusen Road Water Association Whatcom County |
409 | 0 | 0 | |
|
Marys Corner Market Lewis County |
409 | 0 | 0 | |
|
Resort and Marina Clallam County |
409 | 4 | 0 | |
|
Chelatchie Prairie General Store Clark County |
407 | 0 | 0 | |
|
Colonial Creek Campground Whatcom County |
407 | 0 | 0 | |
|
Deming Log Show & RV Whatcom County |
407 | 2 | 0 | |
|
Upper Columbia Academy Spokane County |
407 | 1 | 0 | |
|
Heart of the Hills Clallam County |
406 | 0 | 0 | |
|
Lake Margaret Water System King County |
406 | 2 | 0 | |
|
Swift Campground PP and L CO Skamania County |
406 | 0 | 0 | |
|
MT Baker Ski Area Heather Meadows Whatcom County |
405 | 0 | 0 | |
|
Mustard Seed Lewis County |
405 | 0 | 0 | |
|
Vantage Water System Kittitas County |
405 | 1 | 0 | |
|
Evangelical Free Church Whitman County |
404 | 0 | 0 | |
|
Lake Retreat Camp & Conf Center King County |
404 | 1 | 0 | |
|
Paradise Estates Mason County |
403 | 2 | 0 | |
|
Ridge Motorsports Park Mason County |
403 | 0 | 0 | |
|
Wsdp MT Spokane State Park #6 Spokane County |
403 | 1 | 0 | |
|
Bucklin Kitsap County |
402 | 0 | 0 | |
|
Lopez School District #144 San Juan County |
402 | 0 | 0 | |
|
Iron Creek Lewis County |
401 | 0 | 0 | |
|
LA Wis Wis Campground Lewis County |
401 | 0 | 0 | |
|
Lake Merwin Campers Hideaway Sys 2 Clark County |
401 | 0 | 0 | |
|
Grandview-Northgate Industrial Park Whatcom County |
400 | 1 | 0 | |
|
Kendall Elementary School Whatcom County |
400 | 0 | 0 | |
|
Nooksack Market Deming · County |
400 | 5 | 0 | |
|
Northwest Water Assoc. Inc. Whatcom County |
400 | 0 | 0 | |
|
Othello Manor LLC Adams County |
400 | 1 | 0 | |
|
Sierra Country Club Island County |
400 | 1 | 0 | |
|
Skagit CO Pud Cedargrove Skagit County |
400 | 1 | 0 | |
|
Winlock High School Lewis County |
400 | 0 | 0 | |
|
Country Mercantile Franklin County |
398 | 1 | 0 | |
|
Hartmans Log Cabin Resort INC Ferry County |
397 | 1 | 0 | |
|
Port of Allyn Mason County |
397 | 3 | 0 | |
|
Speelyai Bay Park Cowlitz County |
395 | 0 | 0 | |
|
Olga Water Users INC San Juan County |
392 | 1 | 0 | |
|
Beaver Bay Campground Cowlitz County |
391 | 1 | 0 | |
|
Gold Beach Water Company King County |
390 | 1 | 0 | |
|
Lake Spokane Campground Stevens County |
390 | 0 | 0 | |
|
Olympic Corrections Center Jefferson County |
390 | 0 | 0 | |
|
Alpenhorn Cafe Chelan County |
389 | 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.