We found 12 public water systems that could serve the same population as Lake Preston (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Kingbrook Ii Rural Water System | Arlington | 2,898 | 0 | 3 |
| Desmet | Desmet | 1,089 | 0 | 51 |
| Arlington | Arlington | 915 | 0 | 7 |
| Iroquois | Iroquois | 260 | 0 | 6 |
| De Smet Livestock Sale Barn | County of Kingsbury | 200 | 0 | 0 |
| Oldham | Arlington, Oldham | 133 | 0 | 11 |
| Badger | Badger | 125 | 0 | 15 |
| Spring Lake Colony | Arlington | 120 | 0 | 0 |
| Hetland | County of Kingsbury | 42 | 0 | 0 |
| Bancroft | County of Kingsbury | 37 | 0 | 0 |
| D & D Rv Park | County of Kingsbury | 25 | 0 | 0 |
| Dot Rest Area 203-desmet | Desmet | 25 | 0 | 0 |