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 |
|---|---|---|---|---|
|
Deloro Valley Water System Tuolumne County |
528 | 2 | 0 | |
|
Heavenly Ski Gondola El Dorado County |
520 | 1 | 0 | |
|
Burger King #9310 San Bernardino County |
510 | 1 | 0 | |
|
Jenness Park Christian Camp Tuolumne County |
508 | 1 | 0 | |
|
Studios 6 Suites Madera County |
508 | 2 | 0 | |
|
Camp Tawonga Tuolumne County |
505 | 1 | 0 | |
|
Heavenly Hills Christian Camp Tuolumne County |
504 | 1 | 0 | |
|
Plaskett Creek Campgrounds WS Monterey County |
501 | 2 | 1 | |
|
Camp Mather Tuolumne County |
500 | 1 | 0 | |
|
Oak Tree Mountain San Bernardino County |
500 | 1 | 0 | |
|
Sierra Tahoe Grandview El Dorado County |
500 | 2 | 0 | |
|
Visalia Sales Yard Tulare County |
500 | 1 | 0 | |
|
Rough Acres Foundation San Diego County |
495 | 1 | 0 | |
|
Westhaven C.s.d. Humboldt County |
490 | 1 | 0 | |
|
Dillard Elementary School Sacramento County |
478 | 2 | 0 | |
|
Riverland Resort San Bernardino County |
470 | 1 | 0 | |
|
Belleview Oaks Mutual Water CO Tuolumne County |
468 | 1 | 0 | |
|
Canyon Meadows Mutual Water Kern County |
465 | 2 | 1 | |
|
Gridley Farm Labor Housing Butte County |
460 | 2 | 0 | |
|
Centerville School Fresno County |
456 | 1 | 0 | |
|
Weott C.s.d. Humboldt County |
448 | 2 | 1 | |
|
Stockdale Annex Mutual Water Kern County |
433 | 1 | 0 | |
|
Usmc Housing Coleville Mono County |
424 | 3 | 0 | |
|
Slide Inn Snowbowl Water CO Tuolumne County |
417 | 1 | 0 | |
|
Yosemite Lakes Campground Tuolumne County |
413 | 1 | 0 | |
|
Palo Verde County Water Dist. Imperial County |
410 | 4 | 2 | |
|
Owens-Brockway Glass Container INC San Joaquin County |
404 | 1 | 0 | |
|
Josan and Josan, Inc. Fresno County |
402 | 1 | 0 | |
|
Las Cumbres Mutual Water CO Santa Cruz County |
402 | 1 | 0 | |
|
Bonita Ranch RV Campground San Bernardino County |
400 | 1 | 0 | |
|
Campo Church Road System (hud Homes) County |
400 | 3 | 0 | |
|
Ocotillo RV Resort Imperial County |
400 | 1 | 0 | |
|
Butte Creek Estates Mutual Water CO Butte County |
399 | 3 | 0 | |
|
Lodi Usd-Davis School San Joaquin County |
389 | 1 | 0 | |
|
Spring Creek Tract Association El Dorado County |
389 | 2 | 0 | |
|
Las Deltas Mutual Water Company Fresno County |
375 | 2 | 1 | |
|
Bridgeport Pud Mono County |
374 | 3 | 1 | |
|
Smiley Park Country Club San Bernardino County |
370 | 1 | 0 | |
|
Usfs Baker/deadman Cgd Tuolumne County |
366 | 1 | 0 | |
|
Volta Community SD Merced County |
366 | 2 | 1 | |
|
Campos Bros. Farms Fresno County |
350 | 2 | 1 | |
|
MD 37 la Vina Madera County |
350 | 1 | 0 | |
|
Leisure Pines Mutual Water CO Tuolumne County |
340 | 3 | 2 | |
|
Jehovah's Witnesses Church Reedley Fresno County |
330 | 2 | 0 | |
|
Sierra Moon Mutual Water Company Butte County |
330 | 2 | 1 | |
|
Lincoln Grove Estates Butte County |
327 | 3 | 1 | |
|
Joseph Grant County Park Santa Clara County |
322 | 1 | 0 | |
|
Palmer Creek Csd Humboldt County |
320 | 4 | 2 | |
|
Cascade Estates Tuolumne County |
316 | 1 | 0 | |
|
Shady Creek Outdoor School Nevada County |
315 | 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 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.