22 counties
Counties in Pennsylvania
- Adams County1 water
- Armstrong County1 water
- Beaver County1 water
- Cambria County1 water
- Centre County3 waters
- Chester County1 water
- Clearfield County1 water
- Clinton County2 waters
- Crawford County2 waters
- Elk County2 waters
- Erie County1 water
- Forest County1 water
- Greene County1 water
- Indiana County3 waters
- Jefferson County1 water
- Lawrence County1 water
- Lycoming County3 waters
- McKean County1 water
- Mercer County1 water
- Perry County1 water
- Potter County1 water
- Westmoreland County1 water