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 |
|---|---|---|---|---|
| Lo-Fi Winery | Los Olivos, CA | 413 | 4 | - |
| Thousand Trails - Morgan Hill | Tampa, CA | 413 | 8 | - |
| Yosemite Lakes Campground | Groveland, CA | 413 | 36 | - |
| Sky View County Water | Paynes Creek, CA | 412 | 15 | - |
| Delft Colony Water | Visalia, CA | 412 | 21 | - |
| Usmc Yermo Annex | Barstow, CA | 411 | 8 | - |
| Palo Verde County Water Dist. | Palo Verde, CA | 410 | 31 | - |
| Hhw&p Moccasin Compound-Sfpuc | Burlingame, CA | 410 | 6 | - |
| Leisure Mobile Home Park | Santa Rosa, CA | 410 | 8 | - |
| Tannery Gulch Campground | Redding, CA | 410 | 4 | - |
| Balls Ferry Fishing Resort | Anderson, CA | 408 | 10 | - |
| Triple R Mutual Water Co | Springville, CA | 408 | 127 | - |
| Mid - Barrett Cove | Snelling, CA | 407 | 6 | - |
| Joseph Gallo Cheese Co. | Atwater, CA | 407 | 8 | - |
| Joshua Tree Np - Black Rock Canyon | Twentynine Palms, CA | 407 | 4 | - |
| Christian Life Assembly Water System | Tehachapi, CA | 406 | 0 | - |
| Volta Community SD | Los Banos, CA | 406 | 9 | - |
| Forest Park MWC | Forest Falls, CA | 406 | 15 | - |
| Sonoma County CSA 41-Jenner | Santa Rosa, CA | 406 | 70 | - |
| Lodi Usd-Houston School | Lodi, CA | 405 | 11 | - |
| Csp - Red Rock Canyon | Lancaster, CA | 404 | 33 | - |
| Thousand Trails Oakzanita Inc. | Jamul, CA | 404 | 17 | - |
| Laguna Vista School/Oceanview School Dis | Oxnard, CA | 404 | 15 | - |
| Jh Ranch | Etna, CA | 403 | 2 | - |
| Josan and Josan, Inc. | Selma, CA | 402 | 23 | - |
| Stone Lagoon-State Parks | Eureka, CA | 402 | 5 | - |
| Las Cumbres Mutual Water Co | Los Gatos, CA | 402 | 249 | - |
| Mooney Grove Park | Visalia, CA | 402 | 36 | - |
| Kern Co P&r-Lake Woollomes Water System | Bakersfield, CA | 401 | 15 | - |
| Harbin Hot Springs | Middletown, CA | 401 | 20 | - |
| KOA - Petaluma | Petaluma, CA | 401 | 9 | - |
| Angora Lakes Resort | South Lake Tahoe, CA | 400 | 0 | - |
| Bsa/Camp Chawanakee | Fresno, CA | 400 | 19 | - |
| El Dorado ID - Strawberry | Placerville, CA | 400 | 8 | - |
| Gold Arrow Camp | Clovis, CA | 400 | 24 | - |
| Ocotillo RV Resort | Desert Hot Springs, CA | 400 | 12 | - |
| Sunset Vista Estates MHP | Lemoore, CA | 400 | 12 | - |
| Lakeport Cinemas | Chico, CA | 400 | 16 | - |
| Clear Creek Csd-Westwood | Westwood, CA | 400 | 18 | - |
| Janesville Elementary School | Janesville, CA | 400 | 16 | - |
| Acton la North KOA | Acton, CA | 400 | 18 | - |
| Moss Cove Rest Stop (Caltrans) | Eureka, CA | 400 | 0 | - |
| Csp-Mendocino Woodlands | Mendocino, CA | 400 | 8 | - |
| Sensient Natural Ingredients LLC | Turlock, CA | 400 | 12 | - |
| City of 10,000 Buddhas | Talmage, CA | 400 | 29 | - |
| Napa Valley Country Club | Napa, CA | 400 | 8 | - |
| Morning Star Lake Resort | Mont Clair, CA | 400 | 4 | - |
| Outdoor Resorts Rancho Ca | Aguanga, CA | 400 | 7 | - |
| Hometown Colonial Estates LLC | Rancho Cordova, CA | 400 | 5 | - |
| Bonita Ranch RV Campground | Lytle Creek, CA | 400 | 11 | - |