THOMPSONTOWN STP - Advanced Wastewater Treatment in Delaware Township, Pennsylvania

THOMPSONTOWN STP is an advanced wastewater treatment facility located in Delaware Township, Northumberland County, Pennsylvania. The plant serves a small population of 873 residents, providing essential wastewater treatment for the local community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove additional pollutants such as nutrients. With a designed capacity of 757.08 m³/day and an actual discharge volume of 378.54 m³/day, the facility operates well within its capacity. As a US plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent is discharged into a local waterway, which eventually drains into the Susquehanna River basin and ultimately into the Chesapeake Bay. The Chesapeake Bay is a large estuary that supports diverse aquatic life and is a critical habitat for migratory birds and fish. Advanced treatment helps reduce nutrient loading, which is important for mitigating eutrophication in 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 is ecologically sensitive, supporting species such as the blue crab, striped bass, and various waterfowl. Nutrient pollution from wastewater can contribute to algal blooms and hypoxia, making advanced treatment important for bay health.