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 |
|---|---|---|---|---|
|
Bayview Beach Water District Island County |
1,035 | 3 | 1 | |
|
Samish Farms Water Assn Skagit County |
1,017 | 1 | 0 | |
|
Mission Ridge Ski Area Water System Chelan County |
1,009 | 1 | 0 | |
|
Underwood Skamania County |
1,000 | 2 | 0 | |
|
Finley School District #53 Benton County |
990 | 4 | 0 | |
|
Joemma Beach Pierce County |
989 | 1 | 0 | |
|
Marion Water CO INC Pierce County |
966 | 1 | 0 | |
|
Yak CO Buena Water System Yakima County |
952 | 1 | 0 | |
|
Forest Learning Center Cowlitz County |
951 | 1 | 0 | |
|
Coulee City Town of Grant County |
944 | 1 | 0 | |
|
Winchester WB Rest Area Grant County |
944 | 1 | 0 | |
|
Whitehorse Mercantile Water System Snohomish County |
930 | 1 | 0 | |
|
Quileute Water System Lapush · County |
885 | 2 | 0 | |
|
Potholes General Store Grant County |
877 | 2 | 0 | |
|
Rolling Hills-Glencairn Island County |
872 | 4 | 0 | |
|
Okanogan County Fair Water System Okanogan County |
867 | 2 | 0 | |
|
PE Ell Town of Lewis County |
859 | 4 | 0 | |
|
Quincy Valley Rest Area Grant County |
853 | 1 | 0 | |
|
Daroga State Park North Douglas County |
849 | 1 | 0 | |
|
Hangman Hills Water Dist 15 Spokane County |
827 | 3 | 0 | |
|
Penrose Point State Park Pierce County |
816 | 1 | 0 | |
|
Memorial Bible Church Yakima County |
736 | 2 | 0 | |
|
Skagit Speedways Skagit County |
736 | 2 | 0 | |
|
Garfield Water Department Whitman County |
694 | 4 | 0 | |
|
Wsdp Mt Spokane St Park #3 Spokane County |
679 | 1 | 0 | |
|
Cusick Town of Pend Oreille County |
672 | 1 | 0 | |
|
Forty Nine Degrees North Stevens County |
670 | 2 | 1 | |
|
Wilderness Ridge Community Club Snohomish County |
664 | 1 | 0 | |
|
Fishhook Park Walla Walla County |
645 | 1 | 0 | |
|
Fairfield Town of Spokane County |
643 | 1 | 0 | |
|
Mountaineers Theater Kitsap Kitsap County |
628 | 1 | 0 | |
|
Porcupine Bay Campground Lincoln County |
612 | 1 | 0 | |
|
Sumas Rural Water Association Whatcom County |
612 | 2 | 1 | |
|
Sprague City of Lincoln County |
570 | 5 | 1 | |
|
Horn School Rest Area Whitman County |
557 | 1 | 0 | |
|
Stevens CO Pud Spokane Lake Park Spokane County |
532 | 1 | 0 | |
|
Wellpinit Wellpinit · County |
525 | 6 | 2 | |
|
Great Basin Water Kiona Benton County |
520 | 1 | 0 | |
|
MT Adams Country Club Toppenish · County |
511 | 1 | 0 | |
|
Adams County Fair Adams County |
503 | 2 | 0 | |
|
Thorp Arco Am/pm Kittitas County |
500 | 1 | 0 | |
|
Sea View Water LLC Island County |
496 | 1 | 0 | |
|
Dismal Nitch Rest Area Pacific County |
488 | 1 | 0 | |
|
Endicott Water Dept Whitman County |
488 | 1 | 0 | |
|
Twanoh Falls Beach Club Mason County |
481 | 2 | 0 | |
|
Two Rivers Resort Wellpinit · County |
480 | 6 | 2 | |
|
Black Lake Bible Camp & Conf Ctr Thurston County |
477 | 1 | 0 | |
|
Saratoga Water District Island County |
477 | 2 | 0 | |
|
Spar Restaurant Thurston County |
474 | 1 | 0 | |
|
Chamberlain Lake Rest Area Klickitat County |
467 | 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.