All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Alisal RD WS #3 2262 Alisal RD Monterey County |
25 | 0 | 0 | |
|
Alma Latter-Day Saints Church Santa Clara County |
25 | 2 | 1 | |
|
Almanor Heights Mwc Plumas County |
25 | 0 | 0 | |
|
Alpha Omega Winery Napa County |
25 | 0 | 0 | |
|
Alpine County Health and Human Services Alpine County |
25 | 0 | 0 | |
|
Altman Plants WS #05 -Esp 325 (prev Cs2) Monterey County |
25 | 0 | 0 | |
|
American Legion #593 WS Monterey County |
25 | 2 | 0 | |
|
Anderson Valley Health Center Mendocino County |
25 | 0 | 0 | |
|
Antinori California Napa · Napa County |
25 | 1 | 0 | |
|
Antoinette Mutual Water CO Tehama County |
25 | 2 | 2 | |
|
Aonair Winery Napa County |
25 | 0 | 0 | |
|
Apple Valley Horseman Center San Bernardino County |
25 | 0 | 0 | |
|
Apple Water IS Good San Diego County |
25 | 1 | 0 | |
|
Applegate Station Placer County |
25 | 0 | 0 | |
|
Aronhill Vineyard San Luis Obispo County |
25 | 0 | 0 | |
|
Arrowhead Golf Course Modoc County |
25 | 0 | 0 | |
|
Artisan Coffee Lassen County |
25 | 0 | 0 | |
|
Ashes & Diamonds Winery Napa County |
25 | 0 | 0 | |
|
Aujla Gustine LLC Merced County |
25 | 0 | 0 | |
|
Avidwater, LLC Stanislaus County |
25 | 0 | 0 | |
|
Babcock Winery Santa Barbara County |
25 | 1 | 0 | |
|
Babe Ruth's Oak View San Luis Obispo County |
25 | 0 | 0 | |
|
Bagdad Cafe San Bernardino County |
25 | 2 | 0 | |
|
Barn the San Bernardino County |
25 | 2 | 0 | |
|
Bbpa Fire/archcomb Domestic Madera County |
25 | 0 | 0 | |
|
Bear Creek Community Church San Joaquin County |
25 | 0 | 0 | |
|
Bear Creek Winery San Joaquin County |
25 | 0 | 0 | |
|
Bear Valley, Sierra Discovery Trail Placer County |
25 | 0 | 0 | |
|
Bel Passi Baseball Stanislaus County |
25 | 0 | 0 | |
|
Benton Community Center Mono County |
25 | 0 | 0 | |
|
Benton Station Mono County |
25 | 0 | 0 | |
|
Benziger Family Winery Sonoma County |
25 | 0 | 0 | |
|
Bernardo RD WS #02 Monterey County |
25 | 0 | 0 | |
|
Beverly Lodge El Dorado County |
25 | 2 | 0 | |
|
Bhandal, Inc. Fresno County |
25 | 1 | 0 | |
|
Big Springs Mutual Water System Shasta County |
25 | 1 | 1 | |
|
Biglieri Farm Market San Joaquin County |
25 | 1 | 0 | |
|
Blackbird Farm Mendocino County |
25 | 0 | 0 | |
|
Bloomfield CG #1 Alpine County |
25 | 0 | 0 | |
|
Bloomin Brew Lassen County |
25 | 0 | 0 | |
|
Blue Mountain Center Marin County |
25 | 0 | 0 | |
|
Bodega Bay Oyster Company Sonoma County |
25 | 0 | 0 | |
|
Boise Creek Cg-Snrf Humboldt County |
25 | 0 | 0 | |
|
Bonfire Village Hotel Yolo County |
25 | 1 | 0 | |
|
Boonville Hotel Mendocino County |
25 | 0 | 0 | |
|
Bourbon & Water CO Plumas County |
25 | 0 | 0 | |
|
Bradley-Lockwood RD WS Monterey County |
25 | 0 | 0 | |
|
Bravo Farms Traver Tulare County |
25 | 3 | 0 | |
|
Buehner Houses Stanislaus County |
25 | 0 | 0 | |
|
Burchell Nursery, INC Stanislaus County |
25 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.