We found 18 public water systems in Harrison county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Ramsey Water Company, Inc. | Ramsey | 13,460 | 18 | 7 |
| South Harrison Water Corporation | Corydon | 8,258 | 22 | 25 |
| Caesars World, Inc. | County of Harrison | 7,084 | 0 | 0 |
| Corydon Water Works | Corydon | 5,716 | 0 | 18 |
| Town Of Elizabeth | Elizabeth | 3,980 | 0 | 23 |
| Palmyra Water Works | Palmyra | 3,830 | 0 | 25 |
| East Harrison Water Co, Inc | Greenfield | 1,580 | 0 | 0 |
| Lanesville Water Works | Lanesville | 1,018 | 0 | 34 |
| West Harrison Water Works | County of Harrison | 101 | 0 | 0 |
| University Heights Baptist Ch | Connersville | 75 | 0 | 0 |
| Camp Merry Ledges | Fortville | 65 | 0 | 0 |
| New Amsterdam Quarry/mulzer Crushed Ston | Mauckport | 50 | 0 | 0 |
| Recreation Unlimited | Depauw | 30 | 0 | 0 |
| Pryor Campground | Fortville | 30 | 0 | 0 |
| O Bannon Woods | Corydon | 27 | 0 | 0 |
| Squire Boone Caverns | Mauckport | 25 | 0 | 0 |
| Mills Serv Station | Depauw | 25 | 0 | 0 |
| Whiskey Run Cave | Depauw | 25 | 0 | 0 |