| Borough of Coopersburg | Lower Milford Township |
| Borough of East Bangor |
Lower Mount Bethel Township |
| Borough of Fountain Hill |
Lower Nazareth Township |
| Borough of Macungie |
Lynn Township |
| Borough of North Catasauqua |
North Whitehall Township |
| Borough of Palmerton |
Plainfield Township |
| Borough of Stockertown |
Salisbury Township |
| Chestnuthill Township (Monroe County) |
Tatamy Borough Sewer Authority |
| City of Allentown |
Upper Macungie Township |
| City of Bethlehem |
Upper Macungie Township Authority |
| Forks Township |
Upper Milford Township |
| Forks Township Authority |
Upper Nazareth Township |
| Hanover Township (Lehigh County) |
Washington Township (Lehigh County) |
| Heidelberg Township |
Weisenberg Township |
| Lehigh County Authority |
Whitehall Township |
| Lehigh Township Municipal Authority |
Whitehall Township Authority |
| Lehigh Valley Planning Commission |
Wind Gap Municipal Authority |
| Lower Macungie Township | |
