Lewisburg Area STP - East Buffalo Township, Pennsylvania Wastewater Treatment Plant

Lewisburg Area STP is a municipal wastewater treatment facility located in East Buffalo Township, Union County, Pennsylvania. Serving a population of around 17,064, the plant is part of the region's infrastructure for managing domestic and commercial wastewater. The facility is situated inland, approximately 50 kilometers from the Atlantic coast, and discharges into the local watershed. As a US-based plant, Lewisburg Area STP operates under the regulatory framework of the Clean Water Act, administered by the Pennsylvania Department of Environmental Protection. The National Pollutant Discharge Elimination System (NPDES) permit program sets effluent limits to protect water quality. For a plant serving a medium-sized agglomeration, secondary treatment is typically required, with additional nutrient removal if the receiving water is sensitive. The plant's treated effluent flows into the Susquehanna River basin, which drains into the Chesapeake Bay. The Chesapeake Bay is a large estuary of ecological significance, supporting diverse aquatic life and migratory species. Nutrient pollution from wastewater is a key concern for the bay's health, making advanced treatment important for downstream ecosystems.

Lewisburg Area STP discharges into the Susquehanna River watershed, which flows southward into the Chesapeake Bay. The Chesapeake Bay is the largest estuary in the United States, supporting a rich ecosystem of fish, crabs, and waterfowl. The bay suffers from nutrient pollution, and wastewater treatment plants in the basin are regulated to reduce nitrogen and phosphorus loads to protect this sensitive environment.