Public Water Systems
143,076 active public water systems, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Ptarmigan Warming Hut | Georgetown, CO | 500 | 10 | - |
| Circle K No 4054 | Greenwood Village, CO | 500 | 18 | - |
| Empire Town Of | Empire, CO | 500 | 166 | - |
| Marysville Flea Market | Marysville, CA | 500 | 1 | - |
| St Joseph's Church | Clarksburg, CA | 500 | 11 | - |
| Usfs - Wheeler Gorge Campground | Solvang, CA | 500 | 50 | - |
| Camp Mather | San Francisco, CA | 500 | 8 | - |
| Lsid-Strathmore System | Lindsay, CA | 500 | 15 | - |
| Lsid - Tonyville | Lindsay, CA | 500 | 276 | - |
| Bsa-Camp Whitsett | Van Nuys, CA | 500 | 18 | - |
| Visalia Sales Yard | Visalia, CA | 500 | 14 | - |
| Tract 92 Community Services District | Farmersville, CA | 500 | 40 | - |
| Tulare Co Correctional Center Road Camp | Visalia, CA | 500 | 25 | - |
| Kings River Elementary School | Kingsburg, CA | 500 | 11 | - |
| Palo Verde Union Elementary School | Tulare, CA | 500 | 21 | - |
| River Oaks/Kingdom Hall | Hughson, CA | 500 | 3 | - |
| Jehovah's Witness Sierra Vista Cong | Oakdale, CA | 500 | 6 | - |
| River Oak Grace-Water System | Oakdale, CA | 500 | 7 | - |
| Crows Landing Comm Svc District | Crows Landing, CA | 500 | 15 | - |
| Cline Cellars | Sonoma, CA | 500 | 10 | - |
| Oak Grove School | Santa Rosa, CA | 500 | 10 | - |
| Wright Elementary School | Santa Rosa, CA | 500 | 7 | - |
| Mystery Spot Snack Shack | Santa Cruz, CA | 500 | 6 | - |
| Coyote Valley RV Resort | Los Gatos, CA | 500 | 4 | - |
| Valley Pacific Petroleum Services | Santa Maria, CA | 500 | 0 | - |
| Rancho Alegre | Santa Barbara, CA | 500 | 2 | - |
| Hearst Memorial State Beach | San Simeon, CA | 500 | 2 | - |
| Defense Distrib. Depot, Sharpe Site | Monterey, CA | 500 | 15 | - |
| Harney Lane Migrant Center WS | Sacramento, CA | 500 | 66 | - |
| Campo Hills-County Public Works Wastewtr | Spring Valley, CA | 500 | 3 | - |
| Cuyamaca Outdoor School | Descanso, CA | 500 | 22 | - |
| Mount Laguna Water System | San Diego, CA | 500 | 21 | - |
| California Steel Industries | Fontana, CA | 500 | 0 | - |
| Knoll Enterprises | Ludlow, CA | 500 | 115 | - |
| Echo Lodge Resort | Parker Dam, CA | 500 | 2 | - |
| Oak Tree Mountain | Oak Glen, CA | 500 | 10 | - |
| Kingdom Hall (Fallon RD) | Hollister, CA | 500 | 6 | - |
| Golden Era Productions | San Jacinto, CA | 500 | 90 | - |
| Usfs French Meadows North Shore | Nevada City, CA | 500 | 27 | - |
| Usfs French Meadows South Shore | Nevada City, CA | 500 | 29 | - |
| Circle Oaks Water District | Napa, CA | 500 | 7 | - |
| Growers Service Assn WS (Ice) | Salinas, CA | 500 | 8 | - |
| Arroyo Seco Rec WS | Solvang, CA | 500 | 52 | - |
| Annett's Mono Village | Bridgeport, CA | 500 | 28 | - |
| Csp-Mendocino Headlands-Sea Arch | Duncans Mills, CA | 500 | 0 | - |
| Mendocino County Fairgrounds | Boonville, CA | 500 | 2 | - |
| Yosemite Nps-Crane Flat | Yosemite Np, CA | 500 | 2 | - |
| Sierra Pines Church | Oakhurst, CA | 500 | 0 | - |
| North Fork Elementary School | Oneals, CA | 500 | 93 | - |
| Lancaster National Soccer Center | Lancaster, CA | 500 | 1 | - |
Download the SDWIS/UCMR5 state landscape snapshot cited on this page: sdwis-state-landscape.csv (same CSV as /statistics, CC0).