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 |
|---|---|---|---|---|
|
Lookout Arts Quarry Water System Skagit County |
56 | 2 | 0 | |
|
Sleeper Acres Comm. Assoc. Inc. Island County |
56 | 3 | 0 | |
|
Wells Hydroelectric Project Chelan County |
56 | 1 | 0 | |
|
Mutual Materials Company Spokane County |
55 | 5 | 0 | |
|
Pleasant Cove Mason County |
55 | 1 | 0 | |
|
Port of Port Townsend Quilcene Jefferson County |
55 | 1 | 0 | |
|
Spencer Glen Mason County |
55 | 2 | 0 | |
|
Thornton Water Association Whatcom County |
55 | 1 | 0 | |
|
Welcome Store Whatcom County |
55 | 2 | 0 | |
|
Day Creek Chapel Skagit County |
54 | 1 | 0 | |
|
Forest Hills Park Community Island County |
54 | 2 | 0 | |
|
Homeport Water System Pierce County |
54 | 2 | 0 | |
|
Headwaters Pub Chelan County |
54 | 1 | 0 | |
|
Lyons Ferry Marina Columbia County |
54 | 2 | 0 | |
|
Ross Water System Island County |
54 | 1 | 0 | |
|
Brightside Vintage Farm Kittitas County |
53 | 1 | 0 | |
|
Chamonix Village King County |
53 | 3 | 0 | |
|
Lake Christine Community Club Mason County |
53 | 1 | 0 | |
|
Sunlight Beach Water CO INC Island County |
53 | 1 | 0 | |
|
Allyn Shop Mason County |
52 | 1 | 0 | |
|
Clifton Pebble Beach Mason County |
52 | 1 | 0 | |
|
Roy Y Shell Pierce County |
52 | 1 | 0 | |
|
S & W Marina Holdings Inc. Pierce County |
52 | 1 | 0 | |
|
San Juan Vineyards Water System San Juan County |
52 | 2 | 0 | |
|
Sisco Heights Community Church Snohomish County |
51 | 1 | 0 | |
|
Tahja II Mason County |
51 | 2 | 0 | |
|
Timberline Travelers Park Skagit County |
51 | 1 | 0 | |
|
Cedar Grove Composting Water System King County |
50 | 2 | 0 | |
|
Cherry Harvest Labor Camp Walla Walla County |
50 | 1 | 0 | |
|
Gromore Trading Company Yakima County |
50 | 1 | 0 | |
|
Jones Industrial Park Thurston County |
50 | 2 | 0 | |
|
Mount Forest Water System Snohomish County |
50 | 3 | 0 | |
|
Needle Creek Water System King County |
50 | 2 | 0 | |
|
Oso General Store Snohomish County |
50 | 1 | 0 | |
|
River Oaks RV Park & Campground Lewis County |
50 | 2 | 0 | |
|
Roundup Tavern Pierce County |
50 | 1 | 0 | |
|
Ski View Estates Thurston County |
50 | 4 | 0 | |
|
Willard National Fish Hatchery Skamania County |
50 | 1 | 0 | |
|
Yale Elementary School Cowlitz County |
50 | 2 | 0 | |
|
Gold Bar Nature Trails Snohomish County |
49 | 2 | 0 | |
|
Teamsters 313 Rec Area Mason County |
49 | 1 | 0 | |
|
Alamo Orchard CO Pateros Okanogan County |
48 | 2 | 0 | |
|
Burbank Ranch Housing Kittitas County |
48 | 2 | 1 | |
|
Cliffdell Summer Homes Assn Yakima County |
48 | 1 | 0 | |
|
Cowiche Water Association Yakima County |
48 | 1 | 0 | |
|
Gateway Inn Pierce County |
48 | 1 | 0 | |
|
Island County Maxwelton Park Island County |
48 | 1 | 0 | |
|
Matson Mattawa Campus Grant County |
48 | 1 | 0 | |
|
Riverside Water Dist #1 Snohomish County |
48 | 3 | 0 | |
|
Little Mission Creek Mason County |
47 | 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.