Hanover Boro STP - Conewago Township, Pennsylvania Wastewater Treatment Plant

Hanover Boro STP is a municipal wastewater treatment plant located in Conewago Township, Adams County, Pennsylvania. It serves a population of around 19,158 residents, placing it in the medium agglomeration category for US facilities. The plant is situated inland, more than 50 km from the Atlantic coast. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the Pennsylvania Department of Environmental Protection. For a plant of this scale, secondary treatment is the standard requirement, with potential additional nutrient removal if discharging to sensitive waters. The plant's treated effluent likely discharges to a local stream or river within the Susquehanna River basin, which ultimately flows into the Chesapeake Bay. The Chesapeake Bay watershed is ecologically significant, supporting diverse aquatic life and important migratory fish species. Nutrient management is a key concern in this region due to historical eutrophication issues.

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 ecosystem supports diverse aquatic life, including blue crabs, oysters, and migratory fish such as striped bass. Nutrient loading from wastewater is a key concern in this watershed, as excess nitrogen and phosphorus contribute to algal blooms and hypoxic zones.