We found 18 public water systems that could serve the same population as Mount Vernon (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Mitchell | Mitchell | 15,539 | 40 | 37 |
| Davison Rural Water System Inc | Mitchell | 3,050 | 0 | 1 |
| Aurora-brule Rural Water System | Kimball | 2,600 | 0 | 42 |
| Hanson Rural Water System | Emery, Fulton | 2,463 | 0 | 3 |
| Dot Rest Area 311a - Salem Wb | County of Davison | 1,000 | 0 | 0 |
| Dot Rest Area 310a - Salem Eb | County of Davison | 1,000 | 0 | 0 |
| Barn Campground The | County of Davison | 490 | 0 | 0 |
| Ethan | Ethan | 331 | 0 | 9 |
| Riverside Koa Campground | County of Davison | 300 | 0 | 0 |
| Rosedale Colony | County of Davison | 110 | 0 | 0 |
| Millbrook Colony | County of Davison | 108 | 0 | 0 |
| Famil-e-fun Camp | Mitchell | 100 | 0 | 0 |
| Firesteel Restaurant | Mitchell | 100 | 0 | 0 |
| Dot Rest Area 318a - Irene | County of Davison | 100 | 0 | 0 |
| Goldie's Campground | Mitchell | 50 | 0 | 0 |
| Country Cafe | Ethan | 30 | 0 | 0 |
| Loma Linda Campground | Mitchell | 25 | 0 | 0 |
| Dakota Campground | Mitchell | 25 | 0 | 0 |