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 |
|---|---|---|---|---|
| Usfs-Crystal Lake B-13 Water | Arcadia, CA | 2,000 | 9 | - |
| Mariposa Public Utility Dist | Mariposa, CA | 2,000 | 184 | - |
| U.S. Army Corps-Lake Mendo (Bushay Site) | Ukiah, CA | 2,000 | 2 | - |
| Prunetree Shopping Center WS | Irvine, CA | 2,000 | 28 | - |
| Eastside Water Association | Midway City, CA | 2,000 | 11 | - |
| Northstar Summit Deck & Grill | Truckee, CA | 2,000 | 16 | - |
| American River College | Sacramento, CA | 2,000 | 18 | - |
| Cal Trans - Desert Oasis | San Bernardino, CA | 2,000 | 12 | - |
| Gregori High School | Modesto, CA | 2,000 | 0 | - |
| Western Hills Water District/Diablo Gran | Patterson, CA | 2,000 | 87 | - |
| Marysville Raceway Park | Marysville, CA | 2,000 | 3 | - |
| Fcsa 47 - Quail Lake Estates | Fresno, CA | 1,988 | 14 | - |
| Kinneloa Irrigation Dist. | Pasadena, CA | 1,960 | 39 | - |
| Pacific Union College | Angwin, CA | 1,958 | 9 | - |
| Golden State Water Company - Tanglewood | Hawthorne, CA | 1,947 | 0 | - |
| Ventura Cwwd No. 17 - Bell Canyon | Moorpark, CA | 1,946 | 0 | - |
| Sierra Tahoe Main Lodge | Twin Bridges, CA | 1,940 | 137 | Detected |
| Bolthouse Fresh Foods | Bakersfield, CA | 1,917 | 16 | - |
| Sierra Tahoe West Bowl | Twin Bridges, CA | 1,900 | 8 | - |
| Wp&a - Lost Hills Water System | Lost Hills, CA | 1,888 | 19 | - |
| Hamilton Branch Csd | Lake Almanor, CA | 1,874 | 7 | - |
| U.S. Army Corp New Hogan | Valley Springs, CA | 1,860 | 5 | - |
| Arrowbear Park Cwd | Arrowbear Lake, CA | 1,856 | 7 | - |
| Mecca Arco Travel Center | Indio, CA | 1,847 | 69 | - |
| Fieldbrook Glendale C.s.d. | McKinleyville, CA | 1,845 | 3 | - |
| North Marin WD - Pt. Reyes | Novato, CA | 1,841 | 3 | - |
| San Joaquin County - Colonial Heights | Stockton, CA | 1,841 | 1 | - |
| Inyo County Pwd - Lone Pine | Independence, CA | 1,835 | 23 | - |
| Vineyard Avenue Acres MWC | Oxnard, CA | 1,820 | 12 | - |
| Searles Valley Minerals Operations Inc | Trona, CA | 1,818 | 44 | - |
| Ladera Golf Club | Thermal, CA | 1,806 | 0 | - |
| Chp - Mission Grade Scales | San Leandro, CA | 1,800 | 2 | - |
| Gateway | El Centro, CA | 1,800 | 10 | - |
| Christian Valley Park Csd | Jackson, CA | 1,800 | 6 | - |
| Slavic Missionary Church Inc | Sacramento, CA | 1,800 | 33 | - |
| Big Pine Flats Admin & Recreation | Fawnskin, CA | 1,800 | 0 | - |
| Cal Trans - Valley Wells | San Bernardino, CA | 1,800 | 23 | - |
| Dp&r - McArthur-Burney Falls Sp | Oroville, CA | 1,800 | 2 | - |
| Lake Siskiyou Campground | Irvine, CA | 1,800 | 26 | - |
| Cal-Water Service Co.-Hamilton City | San Jose, CA | 1,799 | 0 | - |
| Palm Springs Aerial Tramway | Palm Springs, CA | 1,799 | 31 | - |
| Lake Elizabeth Mutual Water Co. | Elizabeth Lake, CA | 1,790 | 14 | - |
| San Mateo County Memorial Park | Loma Mar, CA | 1,790 | 26 | - |
| Madera Co Sa3-Parksdale | Madera, CA | 1,789 | 14 | - |
| Linden County Water District | Linden, CA | 1,784 | 12 | - |
| Tasco Spreckels Water Company | Salinas, CA | 1,772 | 14 | - |
| Cold Springs Water Co | Cold Springs, CA | 1,771 | 3 | - |
| Majestic Pines Community SD | Julian, CA | 1,768 | 13 | - |
| Tud - Ponderosa | Sonora, CA | 1,767 | 23 | - |
| Tud - Tuolumne Water System | Sonora, CA | 1,761 | 3 | - |