All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Pumice Flats Campground Madera County |
1,173 | 0 | 0 | |
|
Yosemite Nps-Bridalveil Fall Mariposa County |
1,163 | 0 | 0 | |
|
Temecula/vail Lake KOA Riverside County |
1,123 | 0 | 0 | |
|
Family Market Water System San Joaquin County |
1,105 | 0 | 0 | |
|
Bootleg Campground Mono County |
1,075 | 0 | 0 | |
|
National American Corp. Lp-Lake Minden Sutter County |
1,065 | 0 | 0 | |
|
Horseshoe Meadow Campground Inyo County |
1,052 | 0 | 0 | |
|
Del Norte Coast State Park Mill Creek Del Norte County |
1,051 | 0 | 0 | |
|
LA Purisima Golf Course Santa Barbara County |
1,024 | 1 | 0 | |
|
Lake Solano Park Solano County |
1,019 | 0 | 0 | |
|
Peggy Sue's Diner San Bernardino County |
1,019 | 0 | 0 | |
|
Rsm Resort LLC Santa Barbara County |
1,011 | 0 | 0 | |
|
Escalon Golf Course WS San Joaquin County |
1,010 | 0 | 0 | |
|
CA State Parks Grover Hot Springs Alpine County |
1,008 | 0 | 0 | |
|
Stagecoach Inn Riverside County |
1,006 | 0 | 0 | |
|
Tioga Lake Campground Mono County |
1,006 | 0 | 0 | |
|
CA State Parks D.l. Bliss El Dorado County |
1,005 | 0 | 0 | |
|
Csp-Andrew Molera State Reserve Monterey County |
1,005 | 2 | 2 | |
|
La Jolla Third Gate Campground County |
1,005 | 0 | 0 | |
|
CA State Parks Emerald Bay, Vikingshol El Dorado County |
1,002 | 0 | 0 | |
|
San Antonio Lake Park North WS Monterey County |
1,002 | 1 | 0 | |
|
CA State Parks Emerald Bay, Boat Campg El Dorado County |
1,001 | 0 | 0 | |
|
Arco AM PM Pixley Tulare County |
1,000 | 0 | 0 | |
|
CA State Parks Emerald Bay, Eagle Poin El Dorado County |
1,000 | 0 | 0 | |
|
Cal Trans Coso Junction Inyo County |
1,000 | 0 | 0 | |
|
Cal-Trans Wiley Well Rest Stop Riverside County |
1,000 | 0 | 0 | |
|
Caltrans Phillip S. Raine Sfty Rsra SB Tulare County |
1,000 | 0 | 0 | |
|
Caltrans-Dunigan RS Yolo County |
1,000 | 0 | 0 | |
|
Caltrans-Trinidad NB Humboldt County |
1,000 | 1 | 0 | |
|
Caltrans-Weed Rest Stop Siskiyou County |
1,000 | 0 | 0 | |
|
DE Anza Springs Resort San Diego County |
1,000 | 0 | 0 | |
|
Department of Transportation Stanislaus County |
1,000 | 0 | 0 | |
|
Elkhorn I-5 Rest Area Sacramento County |
1,000 | 0 | 0 | |
|
Emerald Cove Resort San Bernardino County |
1,000 | 0 | 0 | |
|
Glory Hole Recreation Area Calaveras County |
1,000 | 0 | 0 | |
|
Henningsen Lotus Park Water System El Dorado County |
1,000 | 2 | 0 | |
|
Horizon Christian Fellowship San Joaquin County |
1,000 | 0 | 0 | |
|
Jahant Food N Fuel Stop San Joaquin County |
1,000 | 0 | 0 | |
|
King Island Resort PWS San Joaquin County |
1,000 | 0 | 0 | |
|
Lake Yosemite County Park Merced County |
1,000 | 0 | 0 | |
|
Lakeside County Park Lake County |
1,000 | 0 | 0 | |
|
Loomis Community Park Placer County |
1,000 | 0 | 0 | |
|
Mammoth Lakes Basin Mono County |
1,000 | 0 | 0 | |
|
MT Baldy Ski Lift San Bernardino County |
1,000 | 0 | 0 | |
|
Nugget Campground El Dorado County |
1,000 | 1 | 0 | |
|
Our Lady of Assumption Church Stanislaus County |
1,000 | 0 | 0 | |
|
Pacific Coast Producers Yolo County |
1,000 | 0 | 0 | |
|
Palermo Bible Family Church Butte County |
1,000 | 0 | 0 | |
|
Rancho Maria Golf Course Santa Barbara County |
1,000 | 0 | 0 | |
|
Rasor Road Service San Bernardino County |
1,000 | 1 | 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.