Revised Total Coliform Rule (RTCR) violations in California
770 active public water systems in California had a Revised Total Coliform Rule (RTCR) violation in the past three years, 100 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 |
|---|---|---|---|---|
|
Campers Inn RV & Golf Course Yolo County |
95 | 1 | 0 | |
|
Liberty Park Water Association Orange County |
95 | 3 | 1 | |
|
Yokohl Mutual Water CO Tulare County |
95 | 5 | 2 | |
|
Rapid River Mobilehome Park Shasta County |
92 | 2 | 1 | |
|
Tud-Peaceful Pines Water System Tuolumne County |
92 | 1 | 0 | |
|
Vista del Toro WS Monterey County |
92 | 2 | 1 | |
|
Encinal RD WS #01 Monterey County |
91 | 3 | 1 | |
|
Livingston Properties Merced County |
91 | 1 | 0 | |
|
Historic Priest Station, LLC Tuolumne County |
90 | 2 | 0 | |
|
Lake Shasta Pines RV Park & Campground Shasta County |
90 | 2 | 1 | |
|
O'neill Vintners & Distillers Fresno County |
90 | 1 | 0 | |
|
Pnf Lighting Tree CG Plumas County |
90 | 1 | 0 | |
|
West Cottonwood Apartments Shasta County |
90 | 2 | 0 | |
|
Columbia Mobile Home Park Tuolumne County |
89 | 1 | 0 | |
|
Del Oro River Island Serv Terr #2 Tulare County |
89 | 1 | 0 | |
|
Sandy Creek Village MHP Fresno County |
89 | 1 | 0 | |
|
Fort Bidwell Reservation County |
88 | 6 | 0 | |
|
Hans Fahden Vineyards Sonoma County |
87 | 1 | 0 | |
|
Lee's Market Fresno County |
86 | 1 | 0 | |
|
Mjusd Dobbins School Yuba County |
85 | 3 | 2 | |
|
South Yuba Campground Nevada County |
85 | 1 | 0 | |
|
MD 36 Eastin Arcola Madera County |
84 | 1 | 0 | |
|
Northwest Pipe Company San Joaquin County |
82 | 2 | 1 | |
|
Penn Valley Shopping Center Nevada County |
82 | 2 | 0 | |
|
Whitmore Store Shasta County |
82 | 1 | 0 | |
|
Questhaven Municipal Water District San Diego County |
81 | 2 | 0 | |
|
Cal Fire-High Rock Conservation Camp Humboldt County |
80 | 3 | 2 | |
|
Crossover Community Church Fresno County |
80 | 2 | 0 | |
|
Indian Springs Campground Nevada County |
80 | 1 | 0 | |
|
Junction City School Junction City · Trinity County |
80 | 2 | 0 | |
|
Pineview Mobile Home Park Lassen County |
80 | 2 | 1 | |
|
Pnf Big Cove CG Plumas County |
80 | 1 | 0 | |
|
Teixeira Farms Frontier Cooling Santa Barbara County |
80 | 1 | 0 | |
|
Yosemite Vista Estates Tuolumne County |
80 | 2 | 1 | |
|
Leland Creek Improvement Assoc Tuolumne County |
79 | 1 | 0 | |
|
Csa 29 Midway Park San Bernardino County |
78 | 1 | 0 | |
|
Big Rise Village Shasta County |
78 | 2 | 1 | |
|
Rambling Hills Estates Tuolumne County |
78 | 1 | 0 | |
|
Usfs Sweetwater Campground Tuolumne County |
78 | 1 | 0 | |
|
Eddo's Harbor & R V Park Sacramento County |
76 | 1 | 0 | |
|
EL Rancho Motel San Joaquin County |
76 | 1 | 0 | |
|
Reesedale Mutual Water Company Los Angeles County |
76 | 1 | 0 | |
|
Yurok Kepel County |
76 | 7 | 1 | |
|
A1 Winstons Mobile Home Park San Joaquin County |
75 | 2 | 1 | |
|
Unitarian Universalist Comm. of the Mtns Nevada County |
75 | 1 | 0 | |
|
Cathedral Hills Mwc, INC Santa Cruz County |
75 | 2 | 0 | |
|
Clear Creek Mobile Park Shasta County |
75 | 2 | 0 | |
|
Golden Oaks Mobile Home Park Butte County |
75 | 3 | 0 | |
|
Kings Canyon RV Resort Fresno County |
75 | 1 | 0 | |
|
Lakeshore Villa RV Park Shasta County |
75 | 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 California 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.