Revised Total Coliform Rule (RTCR) violations in Washington
845 active public water systems in Washington had a Revised Total Coliform Rule (RTCR) violation in the past three years, 133 of them in the latest quarter of EPA's data. What Revised Total Coliform Rule (RTCR) is and why it matters.
Systems with a Revised Total Coliform Rule (RTCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
North Prosser Market Benton County |
43 | 1 | 0 | |
|
Wildcat Lake County Park Kitsap County |
43 | 1 | 0 | |
|
Lakewood Manor Association Mason County |
42 | 1 | 0 | |
|
Polnell Landing Water Assoc. Island County |
41 | 4 | 0 | |
|
Tieton Orchards North Yakima County |
40 | 2 | 0 | |
|
Evergreen Valley View Water System Island County |
40 | 1 | 0 | |
|
Pepperfield Village Wapato · County |
40 | 3 | 1 | |
|
Floating Bear Thurston County |
37 | 2 | 0 | |
|
Hidden Heights Kitsap County |
35 | 2 | 0 | |
|
Sage Hills Second Water System Grant County |
34 | 2 | 0 | |
|
Sunrise Estates Water System Franklin County |
33 | 2 | 0 | |
|
Baileys Feed Store Thurston County |
32 | 2 | 0 | |
|
Toppenish Community Center Toppenish · County |
32 | 1 | 0 | |
|
North Pacific Bible Camp Lewis County |
31 | 1 | 0 | |
|
Stillaguamish Natural Resources Arlington · County |
31 | 3 | 1 | |
|
Norway Pass Trailhead HP Skamania County |
30 | 2 | 0 | |
|
Faranda Water Associaton Island County |
28 | 6 | 1 | |
|
Mountain Ridge Kittitas County |
28 | 2 | 0 | |
|
Trails West Subdivision Stevens County |
27 | 7 | 1 | |
|
Wagon Wheel Bar & Grill Okanogan County |
26 | 1 | 0 | |
|
Twin Pines Mobile Home Park Okanogan County |
25 | 7 | 1 | |
|
Merry Etta Park Cowlitz County |
24 | 2 | 0 | |
|
Patterson Addition Spokane County |
22 | 2 | 0 | |
|
Sagedale Apartments Grant County |
21 | 3 | 0 | |
|
Bayshore RV Park Pacific County |
17 | 1 | 0 | |
|
Sunwater Beach King County |
17 | 1 | 0 | |
|
Coulee City RV Park Grant County |
15 | 1 | 0 | |
|
Four Seasons Campground Adams County |
15 | 2 | 0 | |
|
Bush Point Resort Island County |
14 | 1 | 0 | |
|
Kpm Water System Ferry County |
12 | 1 | 0 | |
|
Alpine Lakes Lodge Kittitas County |
10 | 1 | 0 | |
|
Skagit River RV & Camping Skagit County |
10 | 2 | 0 | |
|
Pacific Dunes Resort Grays Harbor County |
7 | 1 | 0 | |
|
Quil Ceda Village Tulalip · County |
30,000 | 4 | 0 | |
|
Sunnyside City of Yakima County |
17,194 | 4 | 1 | |
|
Sumner City of Pierce County |
16,438 | 1 | 0 | |
|
Fruitland Mutual Water Company Pierce County |
15,313 | 2 | 0 | |
|
Yak CO Terrace Heights Yakima County |
8,410 | 3 | 0 | |
|
Lake Chelan Reclamation District Chelan County |
6,798 | 3 | 0 | |
|
Mattawa City of Grant County |
5,370 | 2 | 0 | |
|
Longmire Pierce County |
4,871 | 3 | 0 | |
|
Indian John Rest Area (eb/wb) Kittitas County |
4,726 | 1 | 0 | |
|
Stevenson Water Dept Skamania County |
4,702 | 2 | 0 | |
|
Trentwood Irrigation District 3 Spokane County |
4,228 | 3 | 0 | |
|
White Salmon City of Klickitat County |
4,077 | 3 | 0 | |
|
Toutle River Rest Area Nb/sb Cowlitz County |
3,590 | 1 | 0 | |
|
Zillah City of Yakima County |
3,518 | 1 | 0 | |
|
Millersylvania State Park Thurston County |
3,456 | 1 | 0 | |
|
Toutle Community Regional Water Cowlitz County |
3,215 | 2 | 0 | |
|
Napavine City of Lewis County |
3,095 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Revised Total Coliform Rule (RTCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Revised Total Coliform Rule (RTCR) alone.
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.