All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Bucks Lake Marina Plumas County |
45 | 1 | 0 | |
|
California Sweet Potato Growers Coop Merced County |
45 | 0 | 0 | |
|
Campobello Sonoma County |
45 | 0 | 0 | |
|
Clos Pegase Winery Napa County |
45 | 1 | 1 | |
|
Duncans Mills Trading Company Sonoma County |
45 | 0 | 0 | |
|
Ebrpd Piedmont Stables Alameda County |
45 | 0 | 0 | |
|
Elsinore Hills RV Park Riverside County |
45 | 0 | 0 | |
|
Elwell Lodge Plumas County |
45 | 0 | 0 | |
|
Fcsa 23 Exchequer Heights Fresno County |
45 | 0 | 0 | |
|
Garcia Farms Produce Livingston · Merced County |
45 | 0 | 0 | |
|
Golden Valley Camp Amador County |
45 | 0 | 0 | |
|
Holland Riverside Marina Contra Costa County |
45 | 0 | 0 | |
|
Horse & Plow Tasting Room Sonoma County |
45 | 0 | 0 | |
|
Kendall-Jackson Wine Center Sonoma County |
45 | 0 | 0 | |
|
Liberty Baptist Church Stanislaus County |
45 | 1 | 0 | |
|
Mercey Springs Shell Merced County |
45 | 0 | 0 | |
|
Pg&e Psea Camp Shasta Shasta County |
45 | 0 | 0 | |
|
Pg&e Trapper Springs Campgrnd Fresno County |
45 | 1 | 0 | |
|
Piccolo Water System Fresno County |
45 | 0 | 0 | |
|
Roche Family Winery Sonoma County |
45 | 0 | 0 | |
|
Sequoia Motel Tulare County |
45 | 1 | 0 | |
|
Skyline Ranch RV Park & Campground San Diego County |
45 | 0 | 0 | |
|
Stevinson Ranch Maint. Shop/the Grove Merced County |
45 | 0 | 0 | |
|
Thabit Tulare County |
45 | 0 | 0 | |
|
Trattore Winery Sonoma County |
45 | 0 | 0 | |
|
Usfs/lassen Hat CR Work Center Shasta County |
45 | 0 | 0 | |
|
Whitehall Lane Winery Napa County |
45 | 0 | 0 | |
|
Zen Mountain Center Riverside County |
45 | 0 | 0 | |
|
Zinc House Farm Winery San Joaquin County |
45 | 0 | 0 | |
|
Arrowood Vineyards & Winery Sonoma County |
44 | 0 | 0 | |
|
Eagle Ridge RV Park Plumas County |
44 | 0 | 0 | |
|
Musick Heights Mutual Fresno County |
44 | 0 | 0 | |
|
Ocotillo Wells RV Park & Store San Diego County |
44 | 0 | 0 | |
|
Rombauer Sierra Foothills Amador County |
44 | 0 | 0 | |
|
San Pasqual Battlefield State Park San Diego County |
44 | 0 | 0 | |
|
Echo Chalet INC El Dorado County |
43 | 0 | 0 | |
|
ST Francis Yacht Club San Joaquin County |
43 | 0 | 0 | |
|
Teapot Dome Water CO Tulare County |
43 | 0 | 0 | |
|
Twomey Cellars Napa County |
43 | 0 | 0 | |
|
Wheeler Farms Winery Napa County |
43 | 0 | 0 | |
|
Balletto Vineyards Sonoma County |
42 | 0 | 0 | |
|
Dardanelles Resort Tuolumne County |
42 | 0 | 0 | |
|
Ehlers Estate Napa County |
42 | 0 | 0 | |
|
Gurdwara Parmeshar Dwar Madera · Madera County |
42 | 0 | 0 | |
|
Inn at Park Winters Yolo County |
42 | 0 | 0 | |
|
L'azienda D'agostini Amador County |
42 | 2 | 0 | |
|
Millard Canyon Improvement Association Los Angeles County |
42 | 1 | 0 | |
|
Shady Lane RV Camp San Bernardino County |
42 | 0 | 0 | |
|
Slate Mountain HOA Tulare County |
42 | 0 | 0 | |
|
Sugarloaf Water System Sonoma County |
42 | 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.