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 |
|---|---|---|---|---|
| Pinecrest Permittees Assn | Pinecrest, CA | 1,298 | 10 | - |
| Del Oro Water Company - Strawberry Div. | Chico, CA | 1,295 | 50 | - |
| Slo Cwwd No. 23 - Santa Margarita | San Luis Obispo, CA | 1,291 | 2 | - |
| Porterville Developmental Center | Porterville, CA | 1,281 | 24 | - |
| Del Oro River Island Serv Terr #1 | Chico, CA | 1,280 | 147 | - |
| Stratford PUD | Hanford, CA | 1,277 | 21 | - |
| Green Valley Cwd | Green Valley, CA | 1,275 | 6 | - |
| Countryside Care Center | Fresno, CA | 1,274 | 21 | - |
| Dwp - Fawnskin | Big Bear Lake, CA | 1,271 | 5 | - |
| Sonoma County CSA 41-Fitch Mountain | Santa Rosa, CA | 1,265 | 5 | - |
| Montague, City Of | Montague, CA | 1,264 | 23 | - |
| McCabe Union School | El Centro, CA | 1,250 | 40 | - |
| Laguna Seca Recreation WS | Salinas, CA | 1,248 | 198 | - |
| Kettleman City Csd | Kettleman City, CA | 1,242 | 131 | - |
| Howell Mountain Mutual Water Company | Angwin, CA | 1,240 | 92 | - |
| Sbdno County Service Area 70 Cedar Glen | San Bernardino, CA | 1,240 | 24 | - |
| Rolling Green Utilities, Inc. | Big Pine, CA | 1,225 | 25 | - |
| Nps-Devils Postpile | Mammoth Lakes, CA | 1,220 | 8 | - |
| Csp Hollister Hills Svra | Hollister, CA | 1,220 | 20 | - |
| Rio Bravo Greeley School Water System | Bakersfield, CA | 1,219 | 73 | - |
| Hidden Valley Nature Center | Riverside, CA | 1,210 | 4 | - |
| Self-Serve Petroleum | South San Francisco, CA | 1,210 | 22 | - |
| Redway C.s.d. | Redway, CA | 1,207 | 7 | - |
| Nps Prns - Lighthouse | Point Reyes, CA | 1,202 | 7 | - |
| Adventure Mtn Lodge | Zephyr Cove, CA | 1,200 | 0 | - |
| Shant Bhavan Punjabi Funeral Home | Fowler, CA | 1,200 | 9 | - |
| Grimmway Enterprises-Malaga Water System | Bakersfield, CA | 1,200 | 24 | - |
| Sierra Army Depot | Herlong, CA | 1,200 | 19 | - |
| Nps Prns - Glen and Wildcat Campgrounds | Point Reyes, CA | 1,200 | 33 | - |
| Lake Yosemite County Park | Merced, CA | 1,200 | 19 | - |
| Usmc/Mtn Warfare Trng Ctr - Bridgeport | Bridgeport, CA | 1,200 | 0 | - |
| Starbucks | Glendale, CA | 1,200 | 0 | - |
| Defense Distrib. Depot - Tracy Site | Stockton, CA | 1,200 | 9 | - |
| Pg&e | Avila Beach, CA | 1,200 | 26 | - |
| Slocsa #10a - Cayucos | San Luis Obispo, CA | 1,200 | 0 | - |
| Tnf-Logger & Stampede Rc | Nevada City, CA | 1,200 | 42 | - |
| Valley Evangelical Free Church | Vacaville, CA | 1,200 | 7 | - |
| Gerber las Flores Csd | Gerber, CA | 1,200 | 6 | - |
| Vineyard Ave Estates MWC | Oxnard, CA | 1,200 | 8 | - |
| California Institution for Women | Corona, CA | 1,195 | 10 | - |
| Limoneira Ranch #1 | Santa Paula, CA | 1,187 | 6 | - |
| Mt. Hermon Association, Inc. | Mount Hermon, CA | 1,176 | 7 | - |
| Maxwell Public Utility District | Maxwell, CA | 1,175 | 9 | - |
| Cal Am - West San Martin | Pacific Grove, CA | 1,173 | 27 | - |
| Blue Lake, City Of | Blue Lake, CA | 1,172 | 2 | Clean |
| Fairoaks PWS #44 | Stockton, CA | 1,172 | 1 | - |
| Camp Meeker Water System | Camp Meeker, CA | 1,171 | 0 | - |
| Phoenix Lake Estates Cc MWC | Sonora, CA | 1,168 | 47 | - |
| Olympic Valley Psd | Olympic Valley, CA | 1,165 | 1 | - |
| Yosemite Nps-Bridalveil Fall | Yosemite Np, CA | 1,163 | 0 | - |