South Dakota Water Quality
Health violation data for 512 community water systems in South Dakota. Based on EPA Safe Drinking Water Information System (SDWIS) data.
Water Systems
512
Total Violations
1,192
Systems with Violations
50
Cities with Issues
147
Water Systems with Most Violations
| # | Water System | Violations | Health |
|---|---|---|---|
| 1 | SHIRT TAIL GULCH DEVELOPMENT Black Hawk | 187 | Yes |
| 2 | CEDAR GULCH 2 Piedmont | 57 | Yes |
| 3 | OAK MOUNTAIN COUNTRY ESTATES Black Hawk | 41 | Yes |
| 4 | MEADOW CREST SANITARY DISTRICT Spearfish | 32 | Yes |
| 5 | VIEWFIELD RURAL WATER SYSTEM Black Hawk | 32 | Yes |
| 6 | GOLDEN VALLEY WATER COMPANY Black Hawk | 21 | Yes |
| 7 | OWANKA RURAL WATER SYSTEM Black Hawk | 20 | Yes |
| 8 | BOX ELDER Box Elder | 19 | Yes |
| 9 | GARDEN CITY Garden City | 15 | Yes |
| 10 | NORTH MARTIN WATER SYSTEM Pine Ridge | 14 | Yes |
| 11 | ABERDEEN Aberdeen | 14 | Yes |
| 12 | BUFFALO GAP Buffalo Gap | 13 | Yes |
| 13 | SUMMIT Summit | 13 | Yes |
| 14 | ROSHOLT Rosholt | 12 | Yes |
| 15 | YANKTON Yankton | 12 | Yes |
| 16 | MASKELL, VILLAGE OF Vermillion | 10 | Yes |
| 17 | WALNUT PARK Spearfish | 10 | Yes |
| 18 | PROVO AREA WATER SYSTEM Edgemont | 10 | Yes |
| 19 | PINE HILLS PARK Summerset | 9 | Yes |
| 20 | REYNOLDS COURT Spearfish | 9 | Yes |
| 21 | MORRISTOWN Morristown | 9 | Yes |
| 22 | WAGNER Wagner | 9 | Yes |
| 23 | HORSESHOE ACRES WATER ASSOCIATION Piedmont | 9 | Yes |
| 24 | DUPREE Dupree | 8 | Yes |
| 25 | SPRINGFIELD Springfield | 8 | Yes |
| 26 | SOUTH SHORE South Shore | 8 | Yes |
| 27 | EDGEMONT Edgemont | 7 | Yes |
| 28 | LAKE ANDES Lake Andes | 7 | Yes |
| 29 | MONTROSE Montrose | 7 | Yes |
| 30 | SELBY Selby | 7 | Yes |
| 31 | WILLOW LAKE Willow Lake | 7 | Yes |
| 32 | WORTHING Worthing | 7 | Yes |
| 33 | TIMBERLAND PARK Yankton | 7 | Yes |
| 34 | SHERIDAN LAKE HIGHLANDS, INC. Piedmont | 7 | Yes |
| 35 | BRISTOL Bristol | 6 | Yes |
| 36 | COLOME Colome | 6 | Yes |
| 37 | CORSICA Corsica | 6 | Yes |
| 38 | KIMBALL Kimball | 6 | Yes |
| 39 | NISLAND Nisland | 6 | Yes |
| 40 | PARKSTON Parkston | 6 | Yes |
| 41 | UTICA Mission Hill | 6 | Yes |
| 42 | BICENTENNIAL TRAILER COURT Spearfish | 6 | Yes |
| 43 | PRAIRIE HAVEN SUBDIVISION Black Hawk | 6 | Yes |
| 44 | WANBLEE EAST Pine Ridge | 5 | Yes |
| 45 | CANOVA Canova | 5 | Yes |
| 46 | CONDE Conde | 5 | Yes |
| 47 | FLANDREAU Flandreau | 5 | Yes |
| 48 | HUMBOLDT Humboldt | 5 | Yes |
| 49 | MARVIN South Shore | 5 | Yes |
| 50 | TULARE Miller | 5 | Yes |
Most Common Contaminants in South Dakota
| Contaminant | Violations | Systems Affected |
|---|---|---|
| Chlorine | 534 | 207 |
| Lead & Copper Rule | 236 | 9 |
| Copper | 182 | 9 |
| Fluoride | 85 | 47 |
| E. coli | 26 | 14 |
| Atrazine | 22 | 14 |
| Turbidity | 22 | 3 |
| Total Trihalomethanes (TTHM) | 21 | 7 |
| Barium | 21 | 3 |
| Gross Alpha | 10 | 10 |
| Contaminant 1041 | 9 | 1 |
| Thallium | 8 | 1 |
| Total Coliform (RTCR) | 5 | 4 |
| Combined Radium 226/228 | 3 | 2 |
| Total Coliform | 2 | 1 |
Cities with Water Quality Issues
Aurora Brookings Chancellor Freeman Scotland Yankton Sioux Falls Watertown Rosholt Corsica Huron Aberdeen Britton Hoven Redfield Rapid City Belle Fourche Lead Platte Rosebud Pine Ridge Stephan Fort Thompson Lower Brule Agency Village Flandreau Manderson Wagner Vermillion Castlewood Bowdle Eagle Butte Black Hawk Midland New Effington Piedmont Miller Badger Baltic Martin +107 more
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About This Data
Water quality data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations. Only community water systems (CWS) in South Dakota are included.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.