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 |
|---|---|---|---|---|
|
Camp Cedar Crest San Bernardino County |
310 | 1 | 0 | |
|
Easton Presbyterian Church Fresno County |
304 | 2 | 0 | |
|
Boulder Creek Scout Reserv. Santa Cruz County |
302 | 1 | 0 | |
|
Sun Pacific Tulare Tulare County |
301 | 4 | 2 | |
|
8986 Deep Creek Road San Bernardino County |
300 | 1 | 0 | |
|
Brookside Equestrian Park Sacramento County |
300 | 1 | 0 | |
|
Escalon Premier Brands San Joaquin County |
300 | 1 | 0 | |
|
Heringer Estates Winery West Sacramento · Yolo County |
300 | 2 | 0 | |
|
Mountain Camp II El Dorado County |
300 | 1 | 0 | |
|
Paradise Adventist Church Butte County |
300 | 1 | 0 | |
|
Pioneer Bible Church El Dorado County |
300 | 2 | 0 | |
|
Sutherland Reservoir Recreation Area San Diego County |
300 | 1 | 0 | |
|
US Army Corps/island Park Fresno County |
300 | 1 | 0 | |
|
Wilton Chevron Sacramento County |
300 | 2 | 0 | |
|
Yurok Terwer Water System County |
300 | 6 | 1 | |
|
Don Pedro Rec Ag:blue Oaks Tuolumne County |
296 | 1 | 0 | |
|
Downieville Public U.d. Sierra County |
290 | 2 | 1 | |
|
Merquin Elementary School Merced County |
284 | 1 | 0 | |
|
Montecito Sequoia Lodge Tulare County |
270 | 1 | 0 | |
|
Rawhide Mutual Water Company Tuolumne County |
269 | 1 | 0 | |
|
DI Giorgio School Water System Kern County |
268 | 3 | 0 | |
|
Bob's Tiny Mart Tulare County |
265 | 1 | 0 | |
|
Sierra Village Mutual Water CO Tuolumne County |
264 | 1 | 0 | |
|
Bluebell Valley Mwc Tuolumne County |
252 | 1 | 0 | |
|
Buena Vista Elementary School Tulare County |
250 | 1 | 0 | |
|
Countryside Mkt & Restrn-119 Kern County |
250 | 1 | 0 | |
|
Dhs Calexico Imperial County |
250 | 1 | 0 | |
|
Holcomb Valley Ranch San Bernardino County |
250 | 2 | 0 | |
|
Lake Jodie Water System San Bernardino County |
250 | 3 | 1 | |
|
Parkway Lakes RV Park Santa Clara County |
250 | 1 | 0 | |
|
Ramona Oaks RV Resort San Diego County |
250 | 4 | 0 | |
|
Sacramento Yacht Club Yolo County |
250 | 1 | 0 | |
|
Sierra City Water Works, Inc. Sierra City · Sierra County |
250 | 1 | 0 | |
|
Jehovah's Witnesses Kingdom Hall Yolo County |
245 | 3 | 0 | |
|
Charles Brown Water Company Inyo County |
242 | 3 | 1 | |
|
Tecopa Water Vending Machine Inyo County |
241 | 2 | 0 | |
|
Ballico Csd Merced County |
238 | 1 | 0 | |
|
Sonora Estates Mobile Home Park Tuolumne County |
235 | 1 | 0 | |
|
Salyer Mutual WC (formerly Riverview Ac) Trinity County |
231 | 2 | 1 | |
|
Csa No. 31 Stonegate WS San Benito County |
230 | 1 | 0 | |
|
Table Bluff (new) Reservation County |
230 | 4 | 1 | |
|
Usfs Fraser Flat Campgd Tuolumne County |
228 | 1 | 0 | |
|
Sierra Pines Camp El Dorado County |
226 | 2 | 0 | |
|
Tamarron Mobile Home Park Tuolumne County |
225 | 1 | 0 | |
|
Sylvan Harbor Trailer Park Humboldt County |
221 | 1 | 0 | |
|
Pleasant View West School Tulare County |
220 | 2 | 0 | |
|
Wolf Lakes Park Fresno County |
220 | 1 | 0 | |
|
Armenian Church Camp Fresno County |
218 | 2 | 0 | |
|
Old Oak Ranch Tuolumne County |
217 | 1 | 0 | |
|
Coyote Lake County Park Santa Clara County |
216 | 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.