We found 7 public water systems in Sioux county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| County of Sioux | 1,200 | 0 | 0 | |
| Little Eagle Day School | County of Sioux | 300 | 0 | 0 |
| Selfridge City Of | Selfridge | 160 | 0 | 71 |
| Solen School | County of Sioux | 115 | 0 | 0 |
| Pelican Inn | County of Sioux | 100 | 0 | 0 |
| Solen City Of | Solen | 83 | 0 | 0 |
| County of Sioux | 25 | 0 | 0 |