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 |
|---|---|---|---|---|
|
V. Sattui Winery Napa County |
45 | 2 | 1 | |
|
Woodson Bridge RV Park Tehama County |
45 | 1 | 1 | |
|
Forest Knolls Mutual Water CO Butte County |
44 | 1 | 1 | |
|
Pine Ridge Park Estates Shasta County |
44 | 1 | 1 | |
|
Lakeview Apartments Santa Cruz County |
43 | 3 | 1 | |
|
Rubys Valley Care Home Fresno County |
43 | 1 | 1 | |
|
Bucktail Mutual Water Company Trinity County |
42 | 3 | 2 | |
|
Chemurgic Agricultural Chemicals, Inc. Stanislaus County |
42 | 2 | 2 | |
|
Brandon Creek Mws Monterey County |
41 | 1 | 1 | |
|
Caltrans Visalia Maintenance Station Tulare County |
41 | 2 | 2 | |
|
Hartley Mutual Water System Butte County |
41 | 1 | 1 | |
|
Indian Creek Trailer Park Trinity County |
41 | 2 | 1 | |
|
Riverside Crossing MHP Tehama County |
41 | 2 | 1 | |
|
Avi Kwa Ame Farms North County |
40 | 4 | 3 | |
|
Cedar Creek Mobilehome Park Shasta County |
40 | 1 | 1 | |
|
Covington Mill Mwc-Division B Trinity County |
40 | 1 | 1 | |
|
Darioush Winery Napa County |
40 | 1 | 1 | |
|
Dynatect Ro-Lab, Inc. San Joaquin County |
40 | 1 | 1 | |
|
East Three Rivers Mutual Water Corp Tulare County |
40 | 3 | 2 | |
|
Elks Lodge #322 San Luis Obispo County |
40 | 3 | 1 | |
|
Johnstonville Water System Lassen County |
40 | 1 | 1 | |
|
LA Torres Park San Joaquin County |
40 | 1 | 1 | |
|
Lakehead Subd Mutual Water CO Shasta County |
40 | 1 | 1 | |
|
Lakewood Memorial Park & Funeral Home Stanislaus County |
40 | 1 | 1 | |
|
Lnf-Eagle Lake Ranger Station Lassen County |
40 | 2 | 1 | |
|
Mayacamas Warehouse, LLC Sonoma County |
40 | 1 | 1 | |
|
Pine Hill Egg Ranch San Diego County |
40 | 3 | 1 | |
|
Riverland Resort Tulare County |
40 | 2 | 1 | |
|
Seymour's Mutual Water System Trinity County |
40 | 3 | 1 | |
|
Veterinary Development Company Placer County |
40 | 1 | 1 | |
|
Weaver Lumber Water System Shasta County |
40 | 1 | 1 | |
|
Womack Subdivision M.w.c. Tehama County |
40 | 2 | 2 | |
|
Milton Road Water Company Napa County |
39 | 1 | 1 | |
|
Pappas & CO (mendota) Fresno County |
39 | 1 | 1 | |
|
Big Creek Community Serv Dist Fresno County |
38 | 2 | 2 | |
|
Sheridan Road Mutual Water Association San Luis Obispo County |
38 | 1 | 1 | |
|
Colorado Mutual Water Company Los Angeles County |
37 | 1 | 1 | |
|
Courage to Change Tulare County |
37 | 1 | 1 | |
|
Meridian RD WS #09 Monterey County |
37 | 1 | 1 | |
|
Deetjen's Big Sur Inn WS Monterey County |
35 | 2 | 1 | |
|
Feather River Manor Yuba County |
35 | 1 | 1 | |
|
Flournoy School Tehama County |
35 | 1 | 1 | |
|
Gleanings for the Hungry Tulare County |
35 | 4 | 1 | |
|
Natividad RD WS #02 Monterey County |
35 | 1 | 1 | |
|
Rivers End Trailer Park Los Angeles County |
35 | 2 | 2 | |
|
The River Community Los Angeles County |
35 | 2 | 2 | |
|
Two Twenty Four Mobile Home PK Madera County |
35 | 3 | 2 | |
|
Williams RC Farms WS Gonzales · Monterey County |
35 | 2 | 1 | |
|
Camp Lockett Middle School San Diego County |
34 | 1 | 1 | |
|
Feather River School Butte County |
34 | 2 | 2 |
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.