Lead and Copper Rule (LCR) violations in California
404 active public water systems in California had a Lead and Copper Rule (LCR) violation in the past three years, 404 of them in the latest quarter of EPA's data. What Lead and Copper Rule (LCR) is and why it matters.
Systems with a Lead and Copper Rule (LCR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sun Pacific Tulare Tulare County |
301 | 4 | 2 | |
|
Big Pine Tract San Bernardino County |
300 | 1 | 1 | |
|
Heavenly Oaks San Diego County |
300 | 1 | 1 | |
|
Lupin Lodge Santa Clara County |
300 | 2 | 1 | |
|
Spreckels Sugar Company Imperial County |
300 | 4 | 2 | |
|
Yurok Terwer Water System County |
300 | 6 | 1 | |
|
Del Oro WC Country Estates Dist Kern County |
297 | 1 | 1 | |
|
Rancheritos #2 San Bernardino County |
291 | 1 | 1 | |
|
Round Valley Elementary School Mendocino County |
289 | 1 | 1 | |
|
DD Mobile Home Park County |
275 | 9 | 3 | |
|
Park Moabi San Bernardino County |
267 | 1 | 1 | |
|
Eleven Oaks Mobile Home Community Sacramento County |
262 | 1 | 1 | |
|
Los Tules Mutual Water Company San Diego County |
260 | 1 | 0 | |
|
American Union School Fresno County |
250 | 2 | 2 | |
|
Northcrest Mobile Home Park Crescent City · Del Norte County |
250 | 2 | 2 | |
|
Ramona Water Company Riverside County |
250 | 3 | 2 | |
|
River Estates Mutual Water Company Mendocino County |
250 | 1 | 1 | |
|
College Park Mutual Water Company Sonoma County |
244 | 1 | 1 | |
|
Casitas Mutual Water Company Ventura County |
238 | 2 | 2 | |
|
Murrieta Palms Mobile Home Park Riverside County |
237 | 1 | 1 | |
|
North Oaks Mutual Water CO Stanislaus County |
234 | 1 | 1 | |
|
Dogwood Blue Jay Cyn Imp San Bernardino County |
232 | 1 | 1 | |
|
Riverview Water Association Contra Costa County |
230 | 1 | 1 | |
|
Corral de Tierra Country Club WS Monterey County |
225 | 1 | 1 | |
|
Lucerne Vista Mwc San Bernardino County |
224 | 2 | 2 | |
|
Yurok Requa County |
215 | 7 | 2 | |
|
Central Valley Eggs, LLC Wasco · Kern County |
210 | 1 | 1 | |
|
Golden Sierra Estates_fka Mother Lode Tuolumne County |
210 | 2 | 1 | |
|
Cold Springs Main Cold Springs Rancheria · County |
209 | 7 | 2 | |
|
Capell Valley Estates Napa County |
208 | 2 | 2 | |
|
Tecate Vista Mutual Water Company San Diego County |
204 | 1 | 1 | |
|
Gordon Acres Water CO San Bernardino County |
200 | 6 | 4 | |
|
Majestic Townsgate Water System Santa Barbara County |
200 | 1 | 1 | |
|
The Ranch Winery Napa County |
200 | 1 | 1 | |
|
Tucker Acres Mutual Water Co. Napa County |
200 | 1 | 1 | |
|
Sterling Mutual Water Company Los Angeles County |
198 | 2 | 2 | |
|
Western Skies Mobile Home Park Los Angeles County |
198 | 1 | 1 | |
|
Accelerated Charter High School Tulare County |
192 | 2 | 2 | |
|
Alderpoint County Water Humboldt County |
190 | 1 | 1 | |
|
Monte Vista Farming Denair · Stanislaus County |
188 | 3 | 2 | |
|
Ellwood Mutual Water Company Santa Barbara County |
186 | 2 | 2 | |
|
Monterey Park Tract Csd Stanislaus County |
186 | 1 | 1 | |
|
Hrc C.s.d. Del Norte County |
185 | 1 | 1 | |
|
Marcum Illinois Elementary School Sutter County |
185 | 1 | 1 | |
|
Rolling Hills Rancho WA Monterey County |
185 | 1 | 1 | |
|
Copco Lake Mwc Siskiyou County |
181 | 2 | 2 | |
|
Ortega Oaks RV Park&campground Riverside County |
180 | 2 | 2 | |
|
Alpine Springs Mobile Home Park Los Angeles County |
175 | 2 | 2 | |
|
Carson Landscape Industries Sacramento County |
175 | 1 | 1 | |
|
Turlock Auction Yard, Inc. Merced County |
170 | 1 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Lead and Copper Rule (LCR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule (LCR) 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.