2 plants indexed.
Williamsport Central STP serves approximately 44,835 residents in Williamsport, Pennsylvania, as part of the city's municipal wastewater infrastructure. The plant operates under the U.S. Clean Water Act's NPDES permit program.
Williamsport West STP is a municipal wastewater treatment plant serving approximately 12,374 people in Williamsport, Pennsylvania, United States. It operates under the US Clean Water Act framework.