Public Water Systems
7,249 active public water systems in CA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| Bishop Creek System | Bishop, CA | 300 | 4 | - |
| Cal Trans - Division Creek | Bishop, CA | 300 | 3 | - |
| Horseshoe Meadow Campground | Bishop, CA | 300 | 6 | - |
| Grimmway Farms- Frozen Foods | Bakersfield, CA | 300 | 42 | - |
| Chevron San Joaquin | Bakersfield, CA | 300 | 17 | - |
| The Garlic Company | Shafter, CA | 300 | 24 | - |
| El Taco Loco | Bakersfield, CA | 300 | 6 | - |
| Glenhaven Mutual Water Company | Glenhaven, CA | 300 | 19 | - |
| Irwindale Brewery Yard (Iby) | Irwindale, CA | 300 | 8 | - |
| MD 46 Ahwahnee Resorts | Madera, CA | 300 | 158 | - |
| Pumice Flats Campground | Bishop, CA | 300 | 17 | - |
| Kkmjllc Granite Mountain Resort | Oakhurst, CA | 300 | 14 | - |
| MD 63 Meadow Springs Ranch | Madera, CA | 300 | 4 | - |
| Chowchilla Cong of J W S | Chowchilla, CA | 300 | 35 | - |
| Fast and Ez Trip | Knoxville, CA | 300 | 0 | - |
| Yosemite Nps-May Lake Camp | Yosemite Np, CA | 300 | 0 | - |
| Irvine Lodge Rest Stop (Caltrans) | Eureka, CA | 300 | 2 | - |
| Empire Rest Stop (Caltrans) | Eureka, CA | 300 | 0 | - |
| U.S. Army Corps-Lake Mendo (Pomo Site) | Ukiah, CA | 300 | 4 | - |
| Lds Church Atwater | Tulare, CA | 300 | 0 | - |
| Anderson Valley High School | Boonville, CA | 300 | 14 | - |
| Cal Trans - Crestview Rest Area | Bishop, CA | 300 | 9 | - |
| San Antonio School District WS | Lockwood, CA | 300 | 18 | - |
| Old Natividad RD WS #01 | Salinas, CA | 300 | 38 | - |
| Beringer Vineyards | Calistoga, CA | 300 | 12 | - |
| Creekside Village | Penn Valley, CA | 300 | 20 | - |
| Rainbow Springs Public Water System | San Francisco, CA | 300 | 15 | - |
| Tahoe City PUD - Madden Creek | Tahoe City, CA | 300 | 7 | - |
| Talmont Resort Improvement District | Tahoe City, CA | 300 | 15 | - |
| Oakland Feather River Camp | Quincy, CA | 300 | 32 | - |
| Sierra Pacific Industries Quincy | Quincy, CA | 300 | 8 | - |
| Grizzly Creek Ranch Snj | Portola, CA | 300 | 10 | - |
| Riverdale Estates | Irvine, CA | 300 | 34 | - |
| Riverboat Marina | Isleton, CA | 300 | 28 | - |
| East Walnut Grove [Sws] | Sacramento, CA | 300 | 12 | - |
| Brookside Equestrian Park | Elk Grove, CA | 300 | 5 | - |
| North Ridge Country Club | Fair Oaks, CA | 300 | 10 | - |
| Teal Bend Golf Course | Sacramento, CA | 300 | 0 | - |
| Sacramento Rendering | Sacramento, CA | 300 | 8 | - |
| Cosumnes River Preserve Visitor (Blm) | Galt, CA | 300 | 2 | - |
| Wilton Chevron | Elk Grove, CA | 300 | 2 | - |
| Southside Elementary School | Hollister, CA | 300 | 22 | - |
| Dunneville Market & Kitchen | Hollister, CA | 300 | 14 | - |
| Big Pine Tract | Yucaipa, CA | 300 | 5 | - |
| CSA 70-F Morongo | San Bernardino, CA | 300 | 58 | - |
| Camp Gilboa | Los Angeles, CA | 300 | 28 | - |
| 8986 Deep Creek Road | Oak Hills, CA | 300 | 6 | - |
| Campo Elementary School | Pine Valley, CA | 300 | 58 | - |
| Barrett Lake Mh and RV LLC | Santee, CA | 300 | 65 | - |
| Heavenly Oaks | Santee, CA | 300 | 29 | - |