Lead and Copper Rule Revisions (LCRR) violations in California
842 active public water systems in California had a Lead and Copper Rule Revisions (LCRR) violation in the past three years, 844 of them in the latest quarter of EPA's data. What Lead and Copper Rule Revisions (LCRR) is and why it matters.
Systems with a Lead and Copper Rule Revisions (LCRR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Vierra Knolls Mwc Monterey County |
66 | 1 | 1 | |
|
Wilson Road Water Community Kern County |
66 | 2 | 2 | |
|
Brookside MHP San Bernardino County |
65 | 7 | 3 | |
|
Cal Fire-Deadwood Conservation Camp Siskiyou County |
65 | 1 | 1 | |
|
Garlen Court WS Monterey County |
65 | 1 | 1 | |
|
Mountain View Cold Storage Tulare County |
65 | 2 | 1 | |
|
Murphy Hill WS #01 Monterey County |
65 | 1 | 1 | |
|
Rite of Passage/sierra Ridge Calaveras County |
65 | 1 | 1 | |
|
River RD WS #25 Monterey County |
65 | 2 | 1 | |
|
Capurro & Son WS Monterey County |
64 | 1 | 1 | |
|
Country Club County WD Merced County |
64 | 3 | 2 | |
|
Elm Court Fresno County |
64 | 4 | 3 | |
|
Humboldt Woodlands Mutual Butte County |
64 | 1 | 1 | |
|
Melita Heights Mutual Water Company Sonoma County |
64 | 2 | 2 | |
|
Palomino Estates Water Company Humboldt County |
64 | 4 | 3 | |
|
Wegis Mutual Water Company Kern County |
64 | 1 | 1 | |
|
Madison Center Water System Riverside County |
63 | 1 | 1 | |
|
Richvale Elementary School Butte County |
63 | 1 | 1 | |
|
Wonder Valley River Way Ranch Fresno County |
62 | 1 | 1 | |
|
Baker Commodities Inc. Fresno County |
60 | 1 | 1 | |
|
Desert View Trailer Park Riverside County |
60 | 1 | 1 | |
|
Fellowship of Friends Yuba County |
60 | 1 | 1 | |
|
Gcg Water System Kern County |
60 | 1 | 1 | |
|
Groskopf Warehouse & Logistics Sonoma County |
60 | 2 | 2 | |
|
LA Valle Sabbia Inc. Imperial County |
60 | 1 | 1 | |
|
Mid Valley Nut CO Hughson · Stanislaus County |
60 | 3 | 2 | |
|
Rancho Marina Sacramento County |
60 | 2 | 1 | |
|
Reynolds Consumer Products (red Bluff) Tehama County |
60 | 2 | 2 | |
|
Sherwood Forest MHP Fresno County |
60 | 1 | 1 | |
|
Villa Blue Estates Water District Lake County |
60 | 1 | 1 | |
|
Western Pallet Supply & Logistics San Joaquin County |
60 | 1 | 1 | |
|
Whale Gulch School Mendocino County |
60 | 2 | 2 | |
|
Wine Country Inn Napa County |
60 | 1 | 1 | |
|
Growers Transplanting WS Monterey County |
58 | 1 | 1 | |
|
Los Ranchos de Uvas Water Company Santa Clara County |
58 | 1 | 1 | |
|
The Painted Turtle Camp Los Angeles County |
57 | 1 | 1 | |
|
The Willows Resort Santa Cruz County |
57 | 2 | 1 | |
|
Blue Skies Mobile Home Park Los Angeles County |
56 | 1 | 1 | |
|
Graves School WS Monterey County |
56 | 1 | 1 | |
|
Paradise RD WS #09 Monterey County |
56 | 1 | 1 | |
|
Brethren Heritage School, INC Stanislaus County |
55 | 2 | 2 | |
|
Laird Family Estate Napa County |
55 | 2 | 1 | |
|
Lingate Lane Mutual Water Company Santa Barbara County |
55 | 1 | 1 | |
|
Little Baldy Water Los Angeles County |
55 | 2 | 1 | |
|
Mokelumne Mobile Senior Park San Joaquin County |
55 | 1 | 1 | |
|
Pinecrest Permittees Assn Tuolumne County |
55 | 2 | 1 | |
|
R-Wild Horse Ranch Tehama County |
55 | 2 | 1 | |
|
Corda RD WS Monterey County |
54 | 3 | 1 | |
|
Tierra Vista Mwc Monterey County |
54 | 1 | 1 | |
|
Valivu Estates MHP Plumas County |
54 | 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 Revisions (LCRR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule Revisions (LCRR) 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.