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 |
|---|---|---|---|---|
| Meridian RD WS #09 | San Ramon, CA | 37 | 77 | - |
| Bouchaine Vineyards | Napa, CA | 37 | 13 | - |
| Foley Johnson Winery | Rutherford, CA | 37 | 0 | - |
| Di Rosa Art Preserve | Napa, CA | 37 | 14 | - |
| U.S. Bureau of Reclamation-Lk. Berryessa | Napa, CA | 37 | 4 | - |
| Stateline Services Inc | Nipton, CA | 37 | 2 | - |
| Terribles #412 | Las Vegas, CA | 37 | 0 | - |
| Sunrise Mobilehome Park | San Francisco, CA | 37 | 15 | - |
| Humane Society of Sonoma County | Santa Rosa, CA | 37 | 4 | - |
| Jjapt Bloomfield | Sebastopol, CA | 37 | 0 | - |
| Mauritson Labor House | Healdsburg, CA | 37 | 0 | - |
| Woodson Bridge S.r.a. | Oroville, CA | 37 | 15 | - |
| Bud Fine MWC | Lewiston, CA | 37 | 25 | - |
| Courage to Change | Exeter, CA | 37 | 4 | - |
| Kings River Point | Piedra, CA | 36 | 169 | - |
| Pappas & Co (Mendota) | Fresno, CA | 36 | 310 | - |
| Hillview Acres Mutual Water Company | Weldon, CA | 36 | 23 | - |
| Kimberlina Housing Unit | Wasco, CA | 36 | 6 | - |
| 148 East Water System | Inyokern, CA | 36 | 144 | - |
| Silver Spur Center/Gallery Row | Sanger, CA | 36 | 9 | - |
| Hounds Tooth Inn | Oakhurst, CA | 36 | 26 | - |
| Nicasio Valley Ranch Mutual | Nicasio, CA | 36 | 31 | - |
| Yosemite Resort Properties | Pasadena, CA | 36 | 8 | - |
| Redwoods 70'S Water System | Oakhurst, CA | 36 | 0 | - |
| Evergreen Mobile Home Park | Lincoln, CA | 36 | 11 | - |
| Merced New Life School | Merced, CA | 36 | 2 | - |
| Hilltop Ranch-Looney Road | Ballico, CA | 36 | 2 | - |
| Big River Vista Mutual Water Company | Mendocino, CA | 36 | 3 | - |
| Royal Sierra Estates WS | Salinas, CA | 36 | 143 | - |
| Pine St WS #01 | Greenfield, CA | 36 | 5 | - |
| Vierra Canyon WS #29 | Prunedale, CA | 36 | 39 | - |
| Maxville Lake Winery | St. Helena, CA | 36 | 24 | - |
| Los Madrones MWC | San Juan Bautista, CA | 36 | 49 | - |
| MWD of So Cal Iron Mountain | La Verne, CA | 36 | 33 | - |
| Ventucopa | Ventucopa, CA | 36 | 15 | - |
| Foothill Mutual Water Company | Morgan Hill, CA | 36 | 40 | - |
| Deer Hill Mutual Water Co | Morgan Hill, CA | 36 | 1 | - |
| Bobs Market | Anderson, CA | 36 | 0 | - |
| Oak Grove School District Office | Santa Rosa, CA | 36 | 6 | - |
| Fritsch Industrial Park | Santa Rosa, CA | 36 | 0 | - |
| Sonoma Botanical Garden | Glen Ellen, CA | 36 | 0 | - |
| Maze Blvd Mobilehome Park | Tracy, CA | 36 | 14 | - |
| Rancho Colorado WS | Red Bluff, CA | 36 | 12 | - |
| Rmrc-Upper Coffee Camp Day Use | Overland Park, CA | 36 | 2 | - |
| Chinese Camp School | Jamestown, CA | 36 | 18 | - |
| Camp Tuolumne Trails | Groveland, CA | 36 | 2 | - |
| Caples Lake Cg | Pioneer, CA | 35 | 1 | - |
| Alpine Early Learning Center | Markleeville, CA | 35 | 1 | - |
| Mact Health Board, Inc. | Angels Camp, CA | 35 | 2 | - |
| Byron Airport | Byron, CA | 35 | 4 | - |