All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Central Camp Water Company Madera County |
261 | 0 | 0 | |
|
The Summit Shasta County |
260 | 0 | 0 | |
|
Whispering Oaks Program Center San Diego County |
260 | 0 | 0 | |
|
Camp Sugar Pine Madera County |
258 | 0 | 0 | |
|
Field Sports Park/coyote Ranch Santa Clara County |
258 | 0 | 0 | |
|
Kerman Event Center Kerman · Fresno County |
258 | 0 | 0 | |
|
Lds Church Merced Merced · Merced County |
257 | 0 | 0 | |
|
Green Acres Trailer Park Mendocino County |
256 | 0 | 0 | |
|
Sce/camp Edison-Shaver Fresno County |
256 | 0 | 0 | |
|
Dowville Tract Association Fresno County |
255 | 0 | 0 | |
|
Gill Sidhu Chevron Solano County |
255 | 0 | 0 | |
|
River Bend Resort Sonoma County |
255 | 0 | 0 | |
|
Nps Kelso Depot San Bernardino County |
254 | 1 | 0 | |
|
Nid Scotts Flat Lake Reservoir Nevada County |
253 | 0 | 0 | |
|
Firebaugh Travel Plaza (sw) Merced County |
252 | 0 | 0 | |
|
Sonoma County Parks-Vet. Memorial Beach Sonoma County |
252 | 0 | 0 | |
|
Lassen Vnp Summit Lake Tehama County |
251 | 0 | 0 | |
|
Royal Oaks Park WS Monterey County |
251 | 0 | 0 | |
|
Antelope Springs Placer County |
250 | 1 | 0 | |
|
Astorgas Water System Inyo County |
250 | 0 | 0 | |
|
Bacchus Landing Cellars Healdsburg · Sonoma County |
250 | 0 | 0 | |
|
Black Butte Lake, Buckhorn Group, Uscoe Tehama County |
250 | 0 | 0 | |
|
Camp Ritchie Amador County |
250 | 0 | 0 | |
|
Camp Sacramento El Dorado County |
250 | 0 | 0 | |
|
Camp Sierra Fresno County |
250 | 0 | 0 | |
|
Camp Winacka San Diego County |
250 | 0 | 0 | |
|
Camp Wolfeboro Calaveras County |
250 | 0 | 0 | |
|
Catholic Charities Cyo Camp Sonoma County |
250 | 0 | 0 | |
|
Countryside Mkt & Restrn-119 Kern County |
250 | 1 | 0 | |
|
DG Campo San Diego County |
250 | 1 | 0 | |
|
Dollar General 19853 Squaw Valley Fresno County |
250 | 0 | 0 | |
|
Dollar General Janesville Lassen County |
250 | 0 | 0 | |
|
Dollar General Proberta Tehama County |
250 | 0 | 0 | |
|
Dollar General Store #15320 Fresno County |
250 | 0 | 0 | |
|
Dollar General Store # 14280 San Bernardino County |
250 | 1 | 0 | |
|
Dollar General Store #16171 Yolo County |
250 | 0 | 0 | |
|
Grant Line Kitchen Llc. Sacramento County |
250 | 1 | 0 | |
|
Henderson County Park Merced County |
250 | 0 | 0 | |
|
Holcomb Valley Ranch San Bernardino County |
250 | 2 | 0 | |
|
Jackass Rock Camp Madera County |
250 | 0 | 0 | |
|
McPr-Cathey S Valley Park Mariposa County |
250 | 0 | 0 | |
|
Mdf-Medicine Lake Siskiyou County |
250 | 0 | 0 | |
|
Plumas Lake Golf & Country Club Yuba County |
250 | 0 | 0 | |
|
Ram Naam Mandali Church of Modesto Stanislaus County |
250 | 0 | 0 | |
|
Sacramento Yacht Club Yolo County |
250 | 1 | 0 | |
|
Sardine Lake Resort Sierra County |
250 | 0 | 0 | |
|
Wench Creek Campground El Dorado County |
250 | 1 | 0 | |
|
Wishon Village Fresno County |
250 | 0 | 0 | |
|
Wooden Valley Winery Solano County |
250 | 0 | 0 | |
|
Manny Water System Tulare County |
248 | 2 | 1 |
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.