Washingtonville STP - Secondary Wastewater Treatment Plant in Washingtonville, Pennsylvania

Washingtonville STP is a municipal wastewater treatment facility located in Washingtonville, Montour County, Pennsylvania. Serving a small population of 249 residents, the plant is part of the region's wastewater infrastructure managed under the U.S. Clean Water Act. The plant provides secondary treatment, which is the standard level required by the U.S. Environmental Protection Agency (EPA) for municipal wastewater. With a designed capacity of 113.56 million gallons per year and an actual discharge volume of 90.85 million gallons per year, the facility operates at a utilization rate that indicates adequate capacity for its service area. The treated effluent is discharged into a local water body that ultimately drains into the Susquehanna River basin, which flows into the Chesapeake Bay. The plant's operation helps protect downstream water quality and supports the ecological health of the Chesapeake Bay watershed, a vital estuary system.

The plant discharges into a tributary of the Susquehanna River, which flows southward through Pennsylvania and Maryland into the Chesapeake Bay. The Chesapeake Bay is the largest estuary in the United States and supports diverse aquatic life, including fish, crabs, and migratory birds. The plant's secondary treatment reduces organic pollutants and helps maintain water quality in this ecologically sensitive watershed.