We found 23 public water systems in Dearborn county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Tri-township Water Corporation | Lawrenceburg | 9,387 | 0 | 2 |
| Aurora Utilities | Aurora | 6,750 | 0 | 32 |
| North Dearborn Water Corporation | West Harrison | 5,295 | 0 | 4 |
| L-m-s Conservancy District | Aurora | 5,180 | 0 | 59 |
| Valley Rural Utility Company | Lawrenceburg | 5,000 | 0 | 10 |
| Lawrenceburg Municipal Utilities | Lawrenceburg | 5,000 | 0 | 19 |
| City Of Greendale Utilities | Lawrenceburg | 4,750 | 0 | 6 |
| Dillsboro Water Works | Dillsboro | 1,975 | 0 | 4 |
| Hogan Water Corporation | Aurora | 1,195 | 0 | 33 |
| North Dearborn Water Corporation | County of Dearborn | 500 | 0 | 0 |
| Tanners Creek Plant | West Harrison | 336 | 0 | 0 |
| Covered Bridge Restaurant | County of Dearborn | 300 | 0 | 0 |
| Borderline Bar & Grill | West Harrison | 200 | 0 | 0 |
| Valley Village Rv Park | Lawrenceburg | 82 | 0 | 0 |
| Valley Village Trailer Court | County of Dearborn | 60 | 0 | 0 |
| The Heartland | County of Dearborn | 50 | 0 | 0 |
| Teepes Sharon Dipitys | West Harrison | 44 | 0 | 0 |
| Pioneer Park Lake | County of Dearborn | 35 | 0 | 0 |
| Ice Cream Shack | West Harrison | 25 | 0 | 0 |
| Higher Ground Camp/retreat | West Harrison | 25 | 0 | 0 |
| Quail Ridge Sportsmans Club | West Harrison | 25 | 0 | 0 |
| In Mi Power Co. - Tanners Creek Plant | West Harrison | 25 | 0 | 0 |
| Barber Road Cabins | West Harrison | 25 | 0 | 0 |