All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Jjapt Bloomfield Sonoma County |
37 | 0 | 0 | |
|
Mauritson Labor House Sonoma County |
37 | 0 | 0 | |
|
Mending Wall Winery Napa County |
37 | 0 | 0 | |
|
Patterson Cemetery District Patterson · Stanislaus County |
37 | 0 | 0 | |
|
Pennyroyal Farm Mendocino County |
37 | 0 | 0 | |
|
Sabrina Campground Inyo County |
37 | 1 | 0 | |
|
Sage Flat Campground Inyo County |
37 | 1 | 0 | |
|
Stateline Services INC San Bernardino County |
37 | 0 | 0 | |
|
Woodson Bridge S.r.a. Tehama County |
37 | 0 | 0 | |
|
Bobs Market Anderson · Shasta County |
36 | 0 | 0 | |
|
Camp Tuolumne Trails Tuolumne County |
36 | 0 | 0 | |
|
Hillview Packing-Gustine Merced County |
36 | 0 | 0 | |
|
Hounds Tooth Inn Madera County |
36 | 1 | 0 | |
|
Kimberlina Housing Unit Kern County |
36 | 0 | 0 | |
|
Maxville Lake Winery Napa County |
36 | 0 | 0 | |
|
Oak Grove School District Office Sonoma County |
36 | 0 | 0 | |
|
Redwoods 70's Water System Mariposa County |
36 | 0 | 0 | |
|
Rmrc-Upper Coffee Camp Day Use Tulare County |
36 | 0 | 0 | |
|
Silver Spur Center/gallery Row Madera County |
36 | 1 | 0 | |
|
Ventucopa Santa Barbara County |
36 | 0 | 0 | |
|
Yosemite Resort Properties Mariposa County |
36 | 0 | 0 | |
|
Ahwahnee Quik Mart Madera County |
35 | 0 | 0 | |
|
Applegate Motel Water System Placer County |
35 | 0 | 0 | |
|
Bob's Market Fresno County |
35 | 0 | 0 | |
|
Buckeye Tree Lodge Tulare County |
35 | 0 | 0 | |
|
Buckhorn Bar and Restaurant Madera County |
35 | 0 | 0 | |
|
Bucks Lake Camp and RV Park Plumas County |
35 | 0 | 0 | |
|
Byron Airport Contra Costa County |
35 | 0 | 0 | |
|
Cantina Water System Madera County |
35 | 1 | 0 | |
|
Caples Lake CG Alpine County |
35 | 0 | 0 | |
|
Caspar Beach RV Park Mendocino County |
35 | 0 | 0 | |
|
Country Mart Diesel & Gas Water Sys San Joaquin County |
35 | 0 | 0 | |
|
Deerfield Ranch Winery LLC Sonoma County |
35 | 0 | 0 | |
|
Eighth Street East Partners Sonoma County |
35 | 0 | 0 | |
|
Helendale Csd Community Center San Bernardino County |
35 | 0 | 0 | |
|
Hook & Ladder Vineyards and Winery Sonoma County |
35 | 0 | 0 | |
|
Hunnicutt Winery Napa County |
35 | 0 | 0 | |
|
Jimtown and Then Sum Sonoma County |
35 | 0 | 0 | |
|
Lake Sabrina Boat Landing Inyo County |
35 | 0 | 0 | |
|
Mact Health Board, Inc. Calaveras County |
35 | 0 | 0 | |
|
Mks Applegate Placer County |
35 | 0 | 0 | |
|
Natomas Golf Center Sacramento County |
35 | 1 | 0 | |
|
Nps Death Valley, Mesquite Springs Inyo County |
35 | 0 | 0 | |
|
Ocotillo Chevron Station Imperial County |
35 | 0 | 0 | |
|
Olympia Park Water System Nevada County |
35 | 0 | 0 | |
|
Ovid Napa Valley St. Helena · Napa County |
35 | 0 | 0 | |
|
Paradise Ridge Winery Sonoma County |
35 | 0 | 0 | |
|
Pepperwood Environmental Center Sonoma County |
35 | 0 | 0 | |
|
Prunedale Chevron WS Monterey County |
35 | 0 | 0 | |
|
Pit River Chimney Rock County |
35 | 4 | 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.