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 |
|---|---|---|---|---|
|
97 Rock House WS Chelan County |
253 | 1 | 0 | |
|
Sullivan Lake Complex Pend Oreille County |
251 | 1 | 0 | |
|
Nisqually Valley Moose 1905 Thurston County |
250 | 1 | 0 | |
|
Prairie Ridge 605 Thurston County |
250 | 1 | 0 | |
|
Road Warrior Wapato · County |
250 | 4 | 1 | |
|
Metz Community & RV LLC Benton County |
245 | 2 | 0 | |
|
Crescent View Condominium Owners Grant County |
243 | 1 | 0 | |
|
YMCA Camp Reed Pend Oreille County |
242 | 1 | 0 | |
|
Dixie Water Association Walla Walla County |
240 | 2 | 0 | |
|
Ridgeview Estates Water Association Grant County |
240 | 2 | 0 | |
|
Summerset West Water Association Adams County |
240 | 4 | 0 | |
|
River Rue Lincoln County |
237 | 2 | 0 | |
|
Fort Simcoe Job Corps Ctr Toppenish · County |
230 | 8 | 1 | |
|
Sunset Beach Mason County |
228 | 1 | 0 | |
|
Ferry County Fairgrounds Ferry County |
227 | 1 | 0 | |
|
Coldwater Science & Learning Center Cowlitz County |
226 | 1 | 0 | |
|
Sentinel Gap Water Assn Grant County |
226 | 2 | 0 | |
|
Driftwood Shores Water System INC Island County |
222 | 1 | 0 | |
|
Paschal Sherman Indian School Omak · County |
220 | 7 | 0 | |
|
Nason Creek Cg/lake Wenatchee RD Chelan County |
219 | 1 | 0 | |
|
Saddle Mountain Water Assoc. Adams County |
219 | 2 | 0 | |
|
Indian Ridge Water Association Snohomish County |
216 | 2 | 0 | |
|
Oak Meadows Mobile Home Park Clark County |
216 | 2 | 0 | |
|
Colony Mountain Skagit County |
213 | 1 | 0 | |
|
Rose Valley School Cowlitz County |
211 | 1 | 0 | |
|
Othello Country Club Water Assn Adams County |
208 | 2 | 0 | |
|
Bookwalter Winery Benton County |
207 | 1 | 0 | |
|
Mount Spokane Ski #1 Spokane County |
207 | 1 | 0 | |
|
Mullen Hill Terrace MHP Spokane County |
207 | 5 | 0 | |
|
Qui Nai Elt Village Quinault · County |
207 | 3 | 1 | |
|
Arden 1 Stop Stevens County |
206 | 1 | 0 | |
|
Chapman Creek Housing Klickitat County |
205 | 1 | 0 | |
|
Normanna Park Inc. Snohomish County |
202 | 2 | 0 | |
|
Tacoma Narrows Airport Pierce County |
202 | 1 | 0 | |
|
Blue Lake Rest Area Grant County |
201 | 1 | 0 | |
|
Kamiak Butte County Park Whitman County |
201 | 1 | 0 | |
|
Rooks Park Water Walla Walla County |
201 | 1 | 0 | |
|
Verlot Public Service Center Snohomish County |
201 | 1 | 0 | |
|
Copper Creek INC Pierce County |
200 | 1 | 0 | |
|
Davis Industries Inc-903 Island County |
200 | 1 | 0 | |
|
Fields Point Chelan RD Chelan County |
200 | 2 | 0 | |
|
Mount SI Mobile Home Estates King County |
200 | 2 | 0 | |
|
Mountain Loop View Tracts Snohomish County |
200 | 1 | 0 | |
|
Queets Tahola · County |
200 | 5 | 3 | |
|
Iglesia Bethel Adams County |
197 | 1 | 0 | |
|
Yak CO Crewport Yakima County |
192 | 2 | 0 | |
|
Marcus Water Dept Stevens County |
191 | 2 | 0 | |
|
Kitsap West MHC Water CO Kitsap County |
190 | 1 | 0 | |
|
Clark Addition Water System Franklin County |
189 | 3 | 0 | |
|
Bird Dog Family Ltd Partnership II Adams County |
186 | 2 | 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.