Public Water Systems
654 active water systems in SD.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| SIOUX FALLS | SIOUX FALLS, SD | 216,462 | 5 | Detected |
| RAPID CITY | RAPID CITY, SD | 72,009 | 14 | Detected |
| ABERDEEN | ABERDEEN, SD | 27,989 | 91 | Detected |
| BROOKINGS MUNICIPAL UTILITIES | BROOKINGS, SD | 23,377 | 12 | Detected |
| WATERTOWN MUNICIPAL UTILITIES | WATERTOWN, SD | 23,230 | 10 | Detected |
| WEB WATER DEVELOPMENT ASSOCIATION | ABERDEEN, SD | 20,750 | 8 | Detected |
| MITCHELL | MITCHELL, SD | 15,651 | 106 | Detected |
| YANKTON | YANKTON, SD | 15,411 | 91 | Detected |
| HURON | HURON, SD | 14,263 | 11 | Detected |
| PIERRE | PIERRE, SD | 14,091 | 9 | Detected |
| BOX ELDER | BOX ELDER, SD | 14,000 | 330 | Detected |
| MINNEHAHA COMMUNITY WATER CORP | DELL RAPIDS, SD | 13,435 | 16 | Detected |
| BY WATER DISTRICT | TABOR, SD | 13,320 | 21 | Detected |
| SPEARFISH | SPEARFISH, SD | 12,193 | 19 | Clean |
| MID-DAKOTA RURAL WATER | MILLER, SD | 11,833 | 3 | Detected |
| VERMILLION | VERMILLION, SD | 11,695 | 3 | Detected |
| RAPID VALLEY SANITARY DISTRICT | RAPID CITY, SD | 11,408 | 15 | Detected |
| BRANDON | BRANDON, SD | 11,048 | 43 | Detected |
| HARRISBURG | HARRISBURG, SD | 10,297 | 14 | Detected |
| ELLSWORTH AFB | ELLSWORTH AFB, SD | 9,100 | 17 | Detected |
| TEA | TEA, SD | 7,381 | 24 | Detected |
| STURGIS | STURGIS, SD | 7,020 | 87 | Clean |
| KINGBROOK I RURAL WATER SYSTEM | ARLINGTON, SD | 6,455 | 9 | Detected |
| RANDALL COMMUNITY WATER DISTRICT | LAKE ANDES, SD | 6,248 | 15 | Detected |
| BROOKINGS-DEUEL RURAL WATER SYSTEM | TORONTO, SD | 6,200 | 9 | Detected |
| MADISON | MADISON, SD | 6,191 | 86 | Detected |
| LINCOLN COUNTY RURAL WATER SYSTEM | SIOUX FALLS, SD | 5,965 | 6 | Detected |
| BIG SIOUX COMMUNITY WATER SYSTEM | EGAN, SD | 5,800 | 6 | Detected |
| BROWN-DAY-MARSHALL RWS | BRITTON, SD | 5,673 | 6 | Detected |
| BELLE FOURCHE | BELLE FOURCHE, SD | 5,617 | 282 | Clean |
| SOUTH LINCOLN RURAL WATER SYSTEM | BERESFORD, SD | 5,250 | 66 | Detected |
| GRANT-ROBERTS RURAL WATER SYSTEM | MILBANK, SD | 5,050 | 10 | Detected |
| TRIPP COUNTY WATER USER DISTRICT | WINNER, SD | 4,860 | 147 | Clean |
| CLAY RURAL WATER SYSTEM | WAKONDA, SD | 4,780 | 12 | Detected |
| WR/LJ - MNI WICONI | MURDO, SD | 4,720 | 2 | Detected |
| BLACK HAWK WATER USER DISTRICT | BLACK HAWK, SD | 4,500 | 124 | Clean |
| TM RURAL WATER DISTRICT | PARKER, SD | 4,250 | 6 | Detected |
| NPS-MOUNT RUSHMORE NATIONAL MEMORIAL | KEYSTONE, SD | 4,100 | 68 | Detected |
| SIOUX RURAL WATER SYSTEM | WATERTOWN, SD | 4,012 | 13 | Detected |
| EAGLE BUTTE | EAGLE BUTTE, SD | 4,000 | 64 | Detected |
| DAKOTA DUNES CID | DAKOTA DUNES, SD | 3,700 | 3 | — |
| DELL RAPIDS | DELL RAPIDS, SD | 3,633 | 13 | Detected |
| MILBANK | MILBANK, SD | 3,544 | 6 | — |
| DAVISON RURAL WATER SYSTEM INC | MITCHELL, SD | 3,485 | 7 | — |
| HARTFORD | HARTFORD, SD | 3,396 | 33 | — |
| HOT SPRINGS | HOT SPRINGS, SD | 3,395 | 8 | Detected |
| MOBRIDGE | MOBRIDGE, SD | 3,261 | 44 | Detected |
| CANTON | CANTON, SD | 3,066 | 66 | — |
| NORTH SIOUX CITY | NORTH SIOUX CITY, SD | 3,042 | 69 | — |
| LEAD | LEAD, SD | 2,982 | 10 | — |
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