We found 15 public water systems in Grant county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Bullock Pen Water District | Crittenden | 20,048 | 18 | 30 |
| Williamstown Municipal Water Dept | Williamstown | 5,495 | 0 | 42 |
| Corinth Water District | County of Grant | 3,139 | 0 | 26 |
| Dry Ridge Water Works Commission | County of Grant | 2,367 | 0 | 25 |
| Nobles Truck Stop | Corinth | 500 | 0 | 0 |
| Corinth Water Works | Corinth | 300 | 0 | 0 |
| Corinth School | Williamstown | 187 | 0 | 0 |
| Mason School/grant Co Board | Williamstown | 177 | 0 | 0 |
| I75 Campers Village Campground | Dry Ridge | 145 | 0 | 0 |
| Freeway Restaurant | Corinth | 140 | 0 | 0 |
| Three Springs Campground | Corinth | 110 | 0 | 0 |
| True's Motel | Corinth | 10 | 0 | 0 |
| Fairview Christian Church | Williamstown | 10 | 0 | 0 |
| Leach's Sunoco | Corinth | 5 | 0 | 0 |
| Telstar Mobile Home Park | County of Grant | 0 | 0 | 0 |