RALPHO TWP STP - Ralpho Township, Pennsylvania Wastewater Treatment Plant

RALPHO TWP STP is a municipal wastewater treatment plant located in Ralpho Township, Northumberland County, Pennsylvania. Serving a population of about 3,447 people, it is classified as a small agglomeration under US regulatory frameworks. The plant is situated inland, more than 50 km from the coast, and discharges into local waterways. As a US facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Pennsylvania Department of Environmental Protection. For small communities like Ralpho Township, secondary treatment is typically required to meet effluent limits for biochemical oxygen demand and total suspended solids. It is expected to comply with state and federal standards. The treated effluent is discharged into a receiving water body within the Susquehanna River basin, which ultimately drains into the Chesapeake Bay. The plant plays a role in protecting local water quality and the downstream ecosystem, including habitats for fish and aquatic life in the Susquehanna River and the bay.

The plant discharges into a tributary of the Susquehanna River, which flows into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay watershed supports diverse aquatic life, including striped bass, blue crabs, and migratory waterfowl. Nutrient and sediment loads from wastewater plants in the basin are managed under the Chesapeake Bay Total Maximum Daily Load (TMDL) program to reduce eutrophication and improve water quality.