All water systems in California
7,380 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
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 | |
|
Smk Chevron San Joaquin County |
1,000 | 0 | 0 | |
|
ST Maria Goretti Parish (sws) Sacramento County |
1,000 | 1 | 0 | |
|
Sue-Meg Sp-State Parks Humboldt County |
1,000 | 0 | 0 | |
|
Sutter Santa Rosa Regional Hospital Sonoma County |
1,000 | 0 | 0 | |
|
Santa Rosa Rancheria Santa Rosa Rancheria · County |
1,000 | 5 | 1 | |
|
The Pub Water System El Dorado County |
1,000 | 0 | 0 | |
|
Usbr-Tuttletown Rec Area Tuolumne County |
1,000 | 0 | 0 | |
|
Veterans Home of California Napa County |
1,000 | 1 | 1 | |
|
Yosemite Nps-Badger Pass Mariposa County |
1,000 | 0 | 0 | |
|
Yosemite Nps-Yosemite Valley Mariposa County |
1,000 | 1 | 0 | |
|
Gold Bluffs Beach Cg-State Parks Humboldt County |
998 | 0 | 0 | |
|
Rotten Robbie Lake County |
992 | 0 | 0 | |
|
Dempsey Road Mutual Water CO Ventura County |
990 | 0 | 0 | |
|
Montana de Oro State Park San Luis Obispo County |
990 | 1 | 0 | |
|
Upper Lake County Water District Lake County |
989 | 0 | 0 | |
|
Apple Valley Heights Cwd San Bernardino County |
983 | 1 | 1 | |
|
City of Loyalton Loyalton · Sierra County |
983 | 0 | 0 | |
|
Rio Manor Mutual Water CO Ventura County |
983 | 0 | 0 | |
|
Sultana Community Services District Tulare County |
983 | 1 | 1 | |
|
Caltrans Phillip S. Raine Sfty Rsra NB Tulare County |
980 | 0 | 0 | |
|
Hilmar Cheese Company Merced County |
979 | 0 | 0 | |
|
Nyeland Acres Mutual Water CO Ventura County |
975 | 2 | 0 | |
|
Desert Lake Comm Serv Dist Kern County |
968 | 0 | 0 | |
|
Rancho Seco Park Sacramento County |
968 | 1 | 0 | |
|
San Joaquin County Thornton San Joaquin County |
964 | 0 | 0 | |
|
Lake Piru Park Uwcd Ventura County |
960 | 0 | 0 | |
|
Running Creek Casino Water System (habematolel) County |
960 | 1 | 0 | |
|
Del Oro Water Co.-Lime Saddle Marina Butte County |
954 | 0 | 0 | |
|
ST Marys High School San Joaquin County |
953 | 0 | 0 | |
|
Augustine Casino County |
950 | 1 | 0 | |
|
Gatehouse Tasting Room at Bien Nacido Santa Barbara County |
950 | 0 | 0 | |
|
Leavitt Lake Csd Lassen County |
950 | 0 | 0 | |
|
Lawson S Landing Marin County |
946 | 0 | 0 | |
|
Rolling Green Utilities, Inc. Inyo County |
940 | 1 | 0 | |
|
Rosamond School Water System Kern County |
940 | 1 | 0 | |
|
Sundale Union School Tulare County |
930 | 0 | 0 | |
|
Psmcsd Normco Monterey County |
928 | 0 | 0 | |
|
Tulelake, City of Tulelake · Siskiyou County |
925 | 1 | 1 | |
|
Jacoby Creek Cwd Humboldt County |
924 | 0 | 0 | |
|
Lakeside Park Association El Dorado County |
924 | 5 | 1 | |
|
Cisco Grove Campground & RV Park Placer County |
920 | 0 | 0 | |
|
City of Modesto Grayson Modesto · Stanislaus County |
917 | 0 | 0 | |
|
EL Capitan Beach State Park Santa Barbara County |
915 | 0 | 0 | |
|
Jojoba Hills Skp Resort, Inc. Riverside County |
912 | 1 | 1 | |
|
Chris Flat Campground Mono County |
910 | 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.