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 |
| Summit Industrial Park Water System | Tehachapi, CA | 25 | 6 | - |
| Millennium Pacific Greenhouses | Tehachapi, CA | 25 | 0 | - |
| Kingston-Laton Park | Hanford, CA | 25 | 0 | - |
| Pine Acres Blue Lake Resort | Upper Lake, CA | 25 | 24 | - |
| Usfs Oak Flat Water System | Chico, CA | 25 | 13 | - |
| Windflower Point Mutual Water Company | South San Francisco, CA | 25 | 12 | - |
| Jack in the Box - Lakeport, Ca | Fremont, CA | 25 | 10 | - |
| Three Brothers Travel Plaza | Nice, CA | 25 | 8 | - |
| Pizza Factory Janesville | Janesville, CA | 25 | 0 | - |
| Janesville Chevron | Janesville, CA | 25 | 0 | - |
| Artisan Coffee | Janesville, CA | 25 | 0 | - |
| Super Y Market and Villa Monte Motel | Westwood, CA | 25 | 0 | - |
| Leavitt Lake Market | Elk Grove, CA | 25 | 0 | - |
| Hallelujah Junction Market | Chilcoot, CA | 25 | 0 | - |
| Janesville Fire Hall | Susanville, CA | 25 | 0 | - |
| Johnstonville Quality Foods | Susanville, CA | 25 | 0 | - |
| Mountain Meadow Ranch | Susanville, CA | 25 | 0 | - |
| Lassen RV Park & Campground | McArthur, CA | 25 | 1 | - |
| Lakeview Inn and Eagle Lake Bar & Grill | Elk Grove, CA | 25 | 1 | - |
| Sky Park Properties | Lakeport, CA | 25 | 19 | - |
| Hidden Valley Food Mart | Santa Rosa, CA | 25 | 11 | - |
| Honey Lake Campground | Milford, CA | 25 | 12 | - |
| The Mark | Herlong, CA | 25 | 0 | - |
| High Desert Adult & Teen Challenge | Susanville, CA | 25 | 0 | - |
| Camp Scott and Scudder | Downey, CA | 25 | 16 | - |
| Usfs-Mill Creek Summit T-5 | Arcadia, CA | 25 | 9 | - |
| Camps Munz and Mendenhall | Downey, CA | 25 | 6 | - |
| Del Sur Gardens Trailer Park | Westlake Village, CA | 25 | 6 | - |
| Usfs-Rincon Station B-10 | Arcadia, CA | 25 | 2 | - |
| Valhalla Water Association | Tujunga, CA | 25 | 36 | - |
| Young-Nak Presbyterian Church | Lake Hughes, CA | 25 | 19 | - |
| Usfs-Skyline Park / Mount Wilson A-4 | Arcadia, CA | 25 | 18 | - |
| Usfs-Red Box Station A-3 | Arcadia, CA | 25 | 11 | - |
| Usfs-Appletree Flats V-3 | Arcadia, CA | 25 | 7 | - |
| Usfs-Los Alamos S-15 | Arcadia, CA | 25 | 13 | - |
| Usfs-Valyermo Ranger Station | Arcadia, CA | 25 | 14 | - |
| Agnew Meadows Campground | Bishop, CA | 25 | 6 | - |
| Casa Grande Motel | Madera, CA | 25 | 1 | - |
| Eastman Lake Headquarters | Raymond, CA | 25 | 26 | - |
| George's River Ranch | Madera, CA | 25 | 3 | - |
| Bbpa Fire/Archcomb Domestic | Clovis, CA | 25 | 3 | - |
| North Fork Community Development Council | North Fork, CA | 25 | 0 | - |
| McLean Water System | Oakhurst, CA | 25 | 0 | - |
| Diekmann's General Store | Tomales, CA | 25 | 0 | - |
| Devils Gulch Ranch Water System | Nicasio, CA | 25 | 6 | - |
| McPr-Hornitos Co. Park | Mariposa, CA | 25 | 4 | - |
| Shell Building | Ross, CA | 25 | 0 | - |
| Mendocino Inn and Farm - C | Little River, CA | 25 | 0 | - |
| McPr-Red Cloud Park | Mariposa, CA | 25 | 6 | - |
| Coast Inn and Spa | Fort Bragg, CA | 25 | 13 | - |