We found 18 public water systems in Gibson county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Princeton Water Department | Princeton | 10,875 | 8 | 5 |
| Gibson Water, Inc. | Haubstadt | 4,390 | 0 | 14 |
| Fort Branch Water Department | Fort Branch | 3,518 | 6 | 45 |
| Oakland City Water Department | Oakland City | 2,800 | 33 | 111 |
| Haubstadt Water Department | Haubstadt | 2,170 | 0 | 18 |
| Owensville Water Works | Owensville | 2,125 | 0 | 3 |
| Blythe Chapel Church | Owensville | 999 | 0 | 0 |
| Francisco Water Department | Francisco | 802 | 0 | 16 |
| Patoka Water & Electric | Patoka | 750 | 0 | 58 |
| Duke Energy - Gibson Generating Station | East Mount Carmel | 440 | 0 | 0 |
| Hazelton Water Department | Hazleton | 288 | 0 | 86 |
| St. James School | County of Gibson | 150 | 0 | 0 |
| South Gibson Apostolic Chapel | Owensville | 80 | 0 | 0 |
| Big Oak Mobile Home Park | Princeton | 79 | 0 | 0 |
| Mccullough Grove Baptist Church | Delong | 70 | 0 | 0 |
| Tee Pee Campground | Delong | 25 | 0 | 0 |
| Kountry Koffee Kafe | Johnson | 25 | 0 | 0 |
| Shortstop Woc, Inc. | County of Gibson | 25 | 0 | 0 |