Duncannon Boro STP - Advanced Wastewater Treatment in Duncannon, Pennsylvania

Duncannon Boro STP is a municipal wastewater treatment facility located in Duncannon, Perry County, Pennsylvania. The plant serves a population of approximately 1,800 people, providing advanced treatment to protect public health and the environment. The facility employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,135.62 thousand cubic meters per year and a discharge volume of 965.28 thousand cubic meters per year, the plant operates efficiently. As a US facility, it is regulated under the Clean Water Act and must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Pennsylvania Department of Environmental Protection. The treated effluent is discharged into a local water body that ultimately drains into the Susquehanna River and then into the Chesapeake Bay. The Chesapeake Bay is a large estuary of ecological significance, and advanced treatment at plants like Duncannon Boro STP helps reduce nutrient loading, supporting the bay's restoration efforts.

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 Chesapeake Bay watershed supports diverse aquatic life, including blue crabs, oysters, and migratory fish. Advanced treatment at this plant helps reduce nitrogen and phosphorus loads, mitigating eutrophication and hypoxia in the bay.