All water systems in California
2,996 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Two Rivers Sport Camp Plumas County |
150 | 0 | 0 | |
|
Usfs Sims Campground Shasta County |
150 | 0 | 0 | |
|
Warmerdam Packing LLC Kings County |
150 | 0 | 0 | |
|
Willow Berm Marina Sacramento County |
150 | 0 | 0 | |
|
Wolf Creek Campground El Dorado County |
150 | 1 | 0 | |
|
Yosemite Nps-Glen Aulin Tuolumne County |
150 | 0 | 0 | |
|
Yosemite Nps-Sunrise HI Mariposa County |
150 | 0 | 0 | |
|
Dixon 76 Solano County |
149 | 0 | 0 | |
|
Shaffer S High Sierra Camp Sierra County |
149 | 0 | 0 | |
|
Cody Water Association El Dorado County |
148 | 1 | 0 | |
|
MD 06 Lake Shore Park Madera County |
148 | 0 | 0 | |
|
Enchanted Hills Napa County |
146 | 0 | 0 | |
|
McGee Creek Mobile Home Park Mono County |
146 | 1 | 1 | |
|
Bar 717 Ranch Trinity County |
145 | 1 | 0 | |
|
Central CA Almond Growers Assn Fresno County |
145 | 0 | 0 | |
|
Lassen Vnp Southwest/chalet Tehama County |
145 | 0 | 0 | |
|
San Lorenzo Seminary Santa Barbara County |
145 | 0 | 0 | |
|
Tahoe Forest Church Nevada County |
145 | 1 | 0 | |
|
Vallecito County Park San Diego County |
145 | 1 | 0 | |
|
Panorama Heights Prop Owners Tulare County |
144 | 0 | 0 | |
|
Palomar Mtn. SP Silvercrest San Diego County |
143 | 0 | 0 | |
|
Four Jeffrey Campground Inyo County |
142 | 1 | 0 | |
|
Hope Family Wines Water System County |
142 | 0 | 0 | |
|
Shasta Lake RV Resort Shasta County |
141 | 0 | 0 | |
|
American Legion Post #376 Calaveras County |
140 | 0 | 0 | |
|
Courtright Lake Village Fresno County |
140 | 0 | 0 | |
|
Lake Cove Resort Plumas County |
140 | 0 | 0 | |
|
Northshore RV Resort INC San Bernardino County |
140 | 2 | 0 | |
|
NS Mini Mart Tulare County |
140 | 1 | 0 | |
|
Orland Lds Church Orland · Glenn County |
140 | 0 | 0 | |
|
Rio Viento RV Camp [sws] Sacramento County |
140 | 0 | 0 | |
|
Turtle Beach & Water System San Joaquin County |
140 | 0 | 0 | |
|
Elkhorn Boat Launch [sws] Sacramento County |
138 | 0 | 0 | |
|
Lake Tulloch Campgrd & Marina Tuolumne County |
138 | 0 | 0 | |
|
Sierra Christian Camp Tulare County |
136 | 0 | 0 | |
|
Usfs Ah-Di-Na Campground Shasta County |
136 | 0 | 0 | |
|
Cherry Valley Ranch LLC Riverside County |
135 | 0 | 0 | |
|
Diamond Arrow Conference Center Nevada County |
135 | 0 | 0 | |
|
Dwr. Vista del Lago Visitor Ctr,vaquerro Los Angeles County |
135 | 0 | 0 | |
|
Imagery Estate Winery Sonoma County |
135 | 0 | 0 | |
|
Rams Gate Winery Sonoma County |
135 | 0 | 0 | |
|
Three Rivers Hideaway Tulare County |
135 | 2 | 1 | |
|
Csp-Petaluma Adobe State Historic Park Sonoma County |
134 | 0 | 0 | |
|
Thousand Trails Palm Springs MHC Riverside County |
134 | 0 | 0 | |
|
Big Bear Shores RV Resort San Bernardino County |
132 | 0 | 0 | |
|
Christmas Cove San Luis Obispo County |
132 | 0 | 0 | |
|
Robbs Resort El Dorado County |
132 | 1 | 0 | |
|
San Simeon Estate Winery San Simeon · San Luis Obispo County |
132 | 0 | 0 | |
|
Palomar Mtn. SP Doane Valley San Diego County |
131 | 0 | 0 | |
|
Whiskeytown Nra-Carr Memorial Shasta County |
131 | 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.