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 |
|---|---|---|---|---|
|
Naches Town of Yakima County |
3,512 | 3 | 1 | |
|
Nisqually-Leschi & West Nisqually Olympia · County |
3,200 | 7 | 0 | |
|
Lake Wenatchee State Park South SI Chelan County |
2,591 | 1 | 0 | |
|
Skokomish Park Lower Loop County |
2,503 | 1 | 1 | |
|
River Rock Tobacco and Fuel Arlington · County |
2,117 | 4 | 1 | |
|
End of Trail II Oakville · County |
2,000 | 1 | 1 | |
|
Suquamish Regional Public Water System Poulsbo · County |
1,874 | 5 | 0 | |
|
Lucky Eagle Casino Oakville · County |
1,550 | 5 | 3 | |
|
Squaxin Consolidated Shelton · County |
1,500 | 6 | 1 | |
|
Concrete Utilities Skagit County |
1,234 | 2 | 1 | |
|
Skokomish Skokomish Nation · County |
1,150 | 5 | 1 | |
|
Tekoa City of Whitman County |
1,076 | 2 | 0 | |
|
Washington Beef LLC Toppenish · County |
1,025 | 2 | 0 | |
|
Odessa Lincoln County |
986 | 5 | 0 | |
|
Heritage University Water System Toppenish · County |
750 | 5 | 1 | |
|
Blueberries Wapato · County |
550 | 2 | 1 | |
|
Beacon Rock State Park Boat Launch Skamania County |
549 | 1 | 0 | |
|
Pasco Port of 210 Franklin County |
500 | 3 | 0 | |
|
Benton County Two Rivers Park Benton County |
474 | 1 | 0 | |
|
Wellpinit School County |
473 | 5 | 0 | |
|
Index Water Dept Snohomish County |
420 | 3 | 0 | |
|
Resort and Marina Clallam County |
409 | 4 | 0 | |
|
Hartmans Log Cabin Resort INC Ferry County |
397 | 1 | 0 | |
|
Beaver Bay Campground Cowlitz County |
391 | 1 | 0 | |
|
Angel of the Winds RV Resort Arlington · County |
384 | 1 | 1 | |
|
Curlew Conservation Center Ferry County |
349 | 2 | 0 | |
|
Beaver Valley General Store Jefferson County |
335 | 2 | 0 | |
|
Kiana Lodge Suquamish · County |
320 | 1 | 0 | |
|
Port of Vancouver Clark County |
317 | 1 | 0 | |
|
Topp Mart Toppenish · County |
303 | 1 | 1 | |
|
Hillcrest Water Users Assn Grant County |
300 | 1 | 0 | |
|
South Bay Market and Deli Thurston County |
253 | 1 | 0 | |
|
Davis Terrace Water Assn Cowlitz County |
222 | 2 | 0 | |
|
Speedway Grocery Thurston County |
220 | 1 | 0 | |
|
Beacon Rock State Park GP CG Skamania County |
200 | 1 | 0 | |
|
Sun Village Resort LLC Grant County |
192 | 1 | 0 | |
|
Greenbank Village Island County |
165 | 2 | 0 | |
|
Mayfield RV Park Lewis County |
165 | 2 | 0 | |
|
Chief Timothy Park Asotin County |
160 | 1 | 0 | |
|
Country River Farm Okanogan County |
153 | 1 | 0 | |
|
Moses Lake Irrig & Rehab District Grant County |
151 | 1 | 0 | |
|
Chewelah Lds Chapel Stevens County |
150 | 2 | 0 | |
|
Klipchuck CG Methow RD Okanogan County |
149 | 1 | 0 | |
|
Lakes Community Church Spokane County |
147 | 1 | 0 | |
|
59er Diner Chelan County |
134 | 1 | 0 | |
|
Camp Thunderbird Boy Scouts Thurston County |
134 | 1 | 0 | |
|
Portland Fair Estates San Juan County |
130 | 3 | 0 | |
|
Green Acre Farms INC Island 1 Wapato · County |
128 | 2 | 1 | |
|
Tall Timber Ranch Water System Chelan County |
122 | 2 | 0 | |
|
Snowblaze Spokane County |
121 | 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.