Union County, South Dakota
8 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Jefferson | 475 | Groundwater | 3 | 3 |
| Alcester | 820 | Groundwater Purchased | 10 | 0 |
| Two Rivers Golf Club | 120 | Groundwater | 5 | 0 |
| North Sioux City | 3,042 | Groundwater | 1 | 0 |
| Elk Point | 2,124 | Groundwater | 1 | 0 |
| Clay Rws/south Union | 1,447 | Groundwater | 1 | 0 |
| Dakota Dunes Cid | 3,700 | GUP | 0 | 0 |
| Beresford | 2,359 | Groundwater Purchased | 0 | 0 |