We found 13 public water systems that could serve the same population as Davis (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Bon Homme-yankton Rws | Avon, Tabor | 11,862 | 40 | 5 |
| South Lincoln Rural Water System | Beresford, Worthing | 4,404 | 0 | 29 |
| Tm Rural Water District | Parker, Sioux Falls | 3,825 | 0 | 3 |
| Parker | Parker | 1,022 | 0 | 44 |
| Centerville | Centerville | 882 | 0 | 73 |
| Marion | Marion | 784 | 0 | 8 |
| Viborg | Viborg | 782 | 0 | 14 |
| Irene | Irene | 420 | 0 | 15 |
| Hurley | Hurley | 415 | 0 | 30 |
| Chancellor | Chancellor | 264 | 0 | 6 |
| Monroe | County of Turner | 163 | 0 | 0 |
| Super 8 Motel | County of Turner | 100 | 0 | 0 |
| The Outer Limits | County of Turner | 50 | 0 | 0 |