LEBANON CITY STP - North Cornwall Township, Pennsylvania Wastewater Treatment Plant

LEBANON CITY STP is a municipal wastewater treatment plant located at 275 Dairy Road in North Cornwall Township, Lebanon County, Pennsylvania. It serves a population of approximately 47,748 residents, placing it in the medium-agglomeration category under US regulatory frameworks. The plant operates under the US Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all point-source discharges. For facilities of this scale, secondary treatment is typically mandated, with additional nutrient removal requirements if the receiving water body is sensitive. The treated effluent is discharged into a local waterway that ultimately drains into the Susquehanna River basin and then to the Chesapeake Bay. The Chesapeake Bay watershed is a large estuary system that supports diverse aquatic life and is subject to nutrient pollution reduction goals under the Chesapeake Bay Total Maximum Daily Load (TMDL).

The plant's discharge enters a tributary of the Susquehanna River, which flows into the Chesapeake Bay, the largest estuary in the United States. The bay ecosystem supports diverse aquatic life, including blue crabs, oysters, and migratory fish. Nutrient loading from wastewater treatment plants in the watershed is a key concern, driving regulatory requirements for enhanced nitrogen and phosphorus removal in sensitive areas.