We found 51 public water systems in Forest county (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Aqua Pa Jenks Twp Wtp | County of Forest | 4,320 | 0 | 6 |
| Marienville Water Supply Co | County of Forest | 800 | 0 | 0 |
| Tionesta Borough Water Supply | County of Forest | 610 | 0 | 0 |
| West Hickory Water Company | County of Forest | 450 | 0 | 18 |
| Abraxas Youth And Family | County of Forest | 390 | 0 | 0 |
| Forest Area Schools | County of Forest | 300 | 0 | 0 |
| Indian Valley Campground | County of Forest | 250 | 0 | 0 |
| Endeavor Elementary School | County of Forest | 180 | 0 | 0 |
| Blue Jay Spring | County of Forest | 150 | 0 | 0 |
| Blue Jay Spring | County of Forest | 150 | 0 | 0 |
| Cooksburg Cafe | County of Forest | 150 | 0 | 0 |
| Endeavor Water Supply Assoc | County of Forest | 140 | 0 | 0 |
| Skiddleland Campground | County of Forest | 120 | 0 | 0 |
| Clarion River Woodland Lodge | County of Forest | 115 | 0 | 0 |
| Usacoe Tionesta Recreationarea | County of Forest | 100 | 0 | 0 |
| Loleta Bearclaw Campground | County of Forest | 100 | 0 | 0 |
| Penndot-site 16a Primitive Res | County of Forest | 100 | 0 | 0 |
| Pioneer Ranch For Boys | County of Forest | 95 | 0 | 0 |
| Forest Ridge Campground | County of Forest | 80 | 0 | 0 |
| Seldom Inn | County of Forest | 75 | 0 | 0 |
| Flying W Ranch | County of Forest | 75 | 0 | 0 |
| Rowe Campground | County of Forest | 70 | 0 | 0 |
| Usfs Minister Campground | County of Forest | 57 | 0 | 0 |
| Pebble Dell Spring | County of Forest | 50 | 0 | 0 |
| Pebble Dell Spring | County of Forest | 50 | 0 | 0 |
| Cougar Bobs Kellettville Taver | County of Forest | 50 | 0 | 0 |
| Pennsylvania Fish Commission | County of Forest | 50 | 0 | 0 |
| Inn At Hunters Station | County of Forest | 40 | 0 | 0 |
| Blue Jay Inn | County of Forest | 40 | 0 | 0 |
| Us Forest Service-porter Farm | County of Forest | 40 | 0 | 0 |
| Sherman Property Development | County of Forest | 30 | 0 | 0 |
| Usacoe Tionesta Lake | County of Forest | 30 | 0 | 0 |
| The Hills In The Forest | County of Forest | 25 | 0 | 0 |
| Whig Hill Store | County of Forest | 25 | 0 | 0 |
| Little Store | County of Forest | 25 | 0 | 0 |
| Farrells Frost Shoppe | County of Forest | 25 | 0 | 0 |
| Veterans Club Of Forest County | County of Forest | 25 | 0 | 0 |
| Cook Riverside Cabins | County of Forest | 25 | 0 | 0 |
| Endeavor Community Center | County of Forest | 25 | 0 | 0 |
| Us Forest Service-kelly Pines | County of Forest | 25 | 0 | 0 |
| Hickory Nut Inn | County of Forest | 25 | 0 | 0 |
| Sky Jet | County of Forest | 25 | 0 | 0 |
| Usfs Marienville Ranger Sta | County of Forest | 25 | 0 | 0 |
| Usacoe Kellettville | County of Forest | 25 | 0 | 0 |
| Kellettville Valley Store | County of Forest | 25 | 0 | 0 |
| River Forks Restaurant | County of Forest | 25 | 0 | 0 |
| Double R Campgrounds | County of Forest | 25 | 0 | 0 |
| Marks Place | County of Forest | 25 | 0 | 0 |
| Us Forest Service-amsler Spr | County of Forest | 25 | 0 | 0 |
| Usfs Beaver Meadows 2 | County of Forest | 25 | 0 | 0 |
| Usfs Beaver Meadows 1 | County of Forest | 25 | 0 | 0 |