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 |
|---|---|---|---|---|
|
Ccao/yfo Complex Yakima County |
115 | 2 | 0 | |
|
Deer Creek Grocery Mason County |
111 | 2 | 0 | |
|
Masonic Park Snohomish County |
107 | 2 | 0 | |
|
Woodland Heights Clallam County |
105 | 2 | 0 | |
|
Osullivan Sportsmens Resort Grant County |
104 | 1 | 0 | |
|
Ensign Ranch Girls Camp Kittitas County |
101 | 1 | 0 | |
|
Fairway Estates INC Island County |
100 | 2 | 0 | |
|
Fort Road Housing Wapato · County |
100 | 1 | 1 | |
|
Hazel Creek Montessori Kitsap County |
100 | 1 | 0 | |
|
Puebla Restaurant Spokane County |
100 | 2 | 0 | |
|
Westbridge Estates Water Assn Pierce County |
98 | 2 | 0 | |
|
A&b Farmworker Housing Benton County |
96 | 1 | 0 | |
|
Deboer H2a Housing Grant County |
96 | 1 | 0 | |
|
Wapato Headstart Toppenish · County |
95 | 2 | 0 | |
|
Black Beach Resort Ferry County |
81 | 1 | 0 | |
|
Fort Simcoe State Park White Swan · County |
81 | 1 | 1 | |
|
Jorgensen Road Market Lewis County |
81 | 1 | 0 | |
|
Arden Hills Water System Stevens County |
80 | 3 | 0 | |
|
Sauk-Suiattle Darrington · County |
80 | 7 | 3 | |
|
Sacred Road Ministries White Swan · County |
75 | 1 | 0 | |
|
Medicine Creek Winery Thurston County |
74 | 1 | 0 | |
|
Liars Cove Okanogan County |
73 | 1 | 0 | |
|
Black Mountain Ranch Whatcom County |
72 | 1 | 0 | |
|
Conconully Bible Camp Okanogan County |
71 | 1 | 0 | |
|
Port Orchard Seventh Day Kitsap County |
71 | 1 | 0 | |
|
Wyckoff Farms Sunny Hop Benton County |
71 | 1 | 0 | |
|
Bear Creek Golf Course Okanogan County |
68 | 1 | 0 | |
|
Vosper Place Subdivision County |
68 | 4 | 3 | |
|
Bradley Denny Thurston County |
66 | 1 | 0 | |
|
Clifton Beach Tracts CO OP Mason County |
65 | 1 | 0 | |
|
Kineth Claim Community Water Assoc. Island County |
65 | 3 | 0 | |
|
Kaslawrenceproperties Whatcom County |
62 | 1 | 0 | |
|
Whitestone Pears Okanogan County |
62 | 2 | 0 | |
|
Emanuel Heights Water System Okanogan County |
60 | 2 | 0 | |
|
Our Lady of Valley Catholic Church Okanogan County |
60 | 2 | 0 | |
|
Sunset Domestic Water Assn Franklin County |
60 | 1 | 0 | |
|
Smallwoods Harvest Water System Chelan County |
60 | 1 | 0 | |
|
Arrow Lumber & Hardware Lewis County |
58 | 1 | 0 | |
|
Early Winters WC Methow RD Okanogan County |
54 | 1 | 0 | |
|
Fort Okanogan Interpretive Center County |
50 | 2 | 1 | |
|
Stars Early Learning Center Wapato · County |
50 | 1 | 0 | |
|
Pace International Wapato · County |
48 | 2 | 1 | |
|
Spring Creek National Fish Hatchery Skamania County |
48 | 2 | 0 | |
|
Blu-Shastin RV Park Chelan County |
47 | 2 | 0 | |
|
Alpine Mobile Manor King County |
45 | 3 | 0 | |
|
B & D Mobile Court Zillah · County |
45 | 6 | 3 | |
|
Fidelitas Winery Benton County |
44 | 1 | 0 | |
|
Lummi Island Congregational Church Whatcom County |
44 | 1 | 0 | |
|
Cornerstone Ranches Farmworker Housing Toppenish · County |
43 | 1 | 1 | |
|
Meadow Wood 689 Thurston County |
43 | 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.