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 |
|---|---|---|---|---|
|
Olancha Mobil Mart Bishop · Inyo County |
75 | 2 | 0 | |
|
Pine Tree Lane Mutual Water CO Santa Cruz County |
75 | 1 | 0 | |
|
Teleli Golf Club Tuolumne County |
75 | 1 | 0 | |
|
Waddington W.w. Humboldt County |
75 | 3 | 2 | |
|
Wheel-Er in Family Wheel-er In Family Resort · County |
74 | 3 | 0 | |
|
Bautista CC No. 36 Riverside County |
73 | 3 | 0 | |
|
La Posta Upper County |
73 | 4 | 0 | |
|
Thermal Park Riverside County |
73 | 2 | 0 | |
|
Bert's Diner Sacramento County |
72 | 1 | 0 | |
|
Tahoe Sands Inn El Dorado County |
71 | 2 | 0 | |
|
Arviso Mobile Home Park County |
70 | 4 | 2 | |
|
Crescent Beach Motel Del Norte County |
70 | 1 | 0 | |
|
Oak Ridge Winery, LLC San Joaquin County |
70 | 1 | 0 | |
|
Pulikla Tribe County |
70 | 2 | 0 | |
|
Turner Trailer Park County |
70 | 7 | 1 | |
|
Lopez Project San Luis Obispo County |
69 | 1 | 0 | |
|
Camp Tahquitz San Bernardino County |
67 | 1 | 0 | |
|
Gold Rush Mobile Home Park Tuolumne County |
67 | 1 | 0 | |
|
Grays Meadow Campground Inyo County |
67 | 1 | 0 | |
|
Holland Hulling Company Fresno County |
66 | 2 | 0 | |
|
King Fresh Packing & Cooling Tulare County |
66 | 1 | 0 | |
|
Oak Knoll Village San Diego County |
66 | 1 | 0 | |
|
Villa Tahoe Condominiums El Dorado County |
66 | 1 | 0 | |
|
Butte Court Mobile Home Park Del Norte County |
65 | 2 | 1 | |
|
Community Mutual Water CO Ventura County |
65 | 1 | 0 | |
|
Enza Zaden Research San Benito County |
65 | 2 | 0 | |
|
Full Belly Farm Woodland · Yolo County |
65 | 1 | 0 | |
|
Kirkwood Campground Amador County |
65 | 2 | 0 | |
|
Lotus Pub El Dorado County |
65 | 1 | 0 | |
|
Oak Glen Retreat San Bernardino County |
65 | 2 | 1 | |
|
Redding Odd Fellows Camp Trinity County |
65 | 1 | 0 | |
|
Yosemite's Scenic Wonders Mariposa County |
65 | 1 | 0 | |
|
Country Club County WD Merced County |
64 | 3 | 2 | |
|
Mother Lode Water System El Dorado County |
63 | 2 | 0 | |
|
South Campo County |
63 | 5 | 0 | |
|
Tud-Wards Ferry Ranches Tuolumne County |
62 | 1 | 0 | |
|
Aguirre MHP County |
60 | 10 | 0 | |
|
Canyon Ranch RV Park Plumas County |
60 | 1 | 0 | |
|
EL Rio Mobile Home Park San Joaquin County |
60 | 1 | 0 | |
|
Gus S Steakhouse Tuolumne County |
60 | 1 | 0 | |
|
Happy Harbor (sws) Sacramento County |
60 | 2 | 0 | |
|
Lagoon Creek-Redwood NP Del Norte County |
60 | 1 | 0 | |
|
La Posta Lower Community County |
60 | 2 | 0 | |
|
Mireval Improvement Association Santa Clara County |
60 | 1 | 0 | |
|
Peach Growers Tract Improv Assoc Tuolumne County |
60 | 1 | 0 | |
|
SC Corner (water Only) Madera County |
60 | 1 | 0 | |
|
Mariscos la Langosta Water System Tulare County |
60 | 2 | 0 | |
|
Sheldon Trading Post Sacramento County |
60 | 1 | 0 | |
|
Sonora East Center Tuolumne County |
60 | 1 | 0 | |
|
The Trailhead El Dorado County |
60 | 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.