Public Water Systems
654 active public water systems in SD, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| DE Smet | DE Smet, SD | 1,056 | 107 | - |
| Parker | Parker, SD | 1,025 | 86 | - |
| Bear Country USA | Black Hawk, SD | 1,021 | 176 | - |
| Tyndall | Tyndall, SD | 1,012 | 9 | - |
| DOT Rest Area 119 - Glacial Lakes | Sisseton, SD | 1,000 | 5 | - |
| DOT Rest Area - Whetstone Valley | Wilmot, SD | 1,000 | 4 | - |
| Country Store at Three Forks | Black Hawk, SD | 1,000 | 12 | - |
| Piedmont | Piedmont, SD | 971 | 5 | - |
| Worthing | Worthing, SD | 939 | 124 | - |
| Ipswich | Ipswich, SD | 928 | 26 | - |
| Valley Springs | Valley Springs, SD | 925 | 25 | - |
| Centerville | Centerville, SD | 918 | 197 | - |
| Arlington | Arlington, SD | 915 | 19 | - |
| Addie Camp Water and Septic | Piedmont, SD | 900 | 2 | - |
| Wessington Springs | Wessington Springs, SD | 895 | 16 | - |
| Marion | Marion, SD | 894 | 15 | - |
| Whitewood | Whitewood, SD | 879 | 68 | - |
| Hill City | Hill City, SD | 872 | 251 | - |
| Mina Lake Sanitary District | Aberdeen, SD | 863 | 49 | - |
| Palmer Gulch Lodge/Mt Rushmore KOA | Black Hawk, SD | 850 | 9 | - |
| Howard | Howard, SD | 848 | 30 | - |
| Alcester | Alcester, SD | 820 | 30 | - |
| Viborg | Viborg, SD | 814 | 48 | - |
| Eureka | Eureka, SD | 813 | 19 | - |
| Fort Meade VA Center | Fort Meade, SD | 800 | 140 | - |
| Csp-Sylvan Lake | Custer, SD | 799 | 0 | - |
| Scotland | Scotland, SD | 785 | 7 | - |
| Plankinton | Plankinton, SD | 782 | 64 | - |
| Philip | Philip, SD | 759 | 89 | Clean |
| Elkton | Elkton, SD | 755 | 53 | - |
| Wonderland Homes | Rapid City, SD | 750 | 21 | - |
| Estelline | Estelline, SD | 749 | 205 | - |
| Colton | Colton, SD | 738 | 134 | - |
| Edgemont | Edgemont, SD | 725 | 503 | - |
| Lake Andes | Lake Andes, SD | 710 | 52 | - |
| Powder House Lodge | Rapid City, SD | 700 | 13 | - |
| Wall | Wall, SD | 699 | 80 | Clean |
| Castlewood | Castlewood, SD | 698 | 151 | - |
| Armour | Armour, SD | 698 | 13 | - |
| Faulkton | Faulkton, SD | 693 | 22 | - |
| Highmore | Highmore, SD | 682 | 143 | - |
| New Underwood | New Underwood, SD | 679 | 144 | - |
| Onida | Onida, SD | 658 | 139 | - |
| Sun Valley Development | Rapid City, SD | 650 | 2 | Clean |
| Alexandria | Alexandria, SD | 649 | 20 | - |
| Selby | Selby, SD | 645 | 68 | - |
| Canistota | Canistota, SD | 642 | 33 | - |
| Colman | Colman, SD | 634 | 154 | - |
| Guadalajara Mexican Restaurant | Spearfish, SD | 630 | 129 | - |
| Woonsocket | Woonsocket, SD | 618 | 147 | - |