Chambersburg Boro STP - Guilford Township, Pennsylvania Wastewater Treatment Plant

Chambersburg Boro STP is a municipal wastewater treatment facility located in Guilford Township, Franklin County, Pennsylvania. Serving an estimated population of 41,324, the plant is part of the region's essential water infrastructure, handling domestic and industrial wastewater from the Chambersburg area. 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 serving over 40,000 people, secondary treatment is the minimum standard, with additional nutrient removal likely required to protect downstream waters. The plant's treated effluent enters the local watershed, which drains into the Conococheague Creek, a tributary of the Potomac River. The Potomac flows into the Chesapeake Bay, a large estuary of ecological and economic importance. Nutrient and sediment controls at plants like Chambersburg Boro STP are critical for reducing pollution loads to the bay.

The plant discharges into the Conococheague Creek watershed, which flows into the Potomac River and ultimately the Chesapeake Bay. The Chesapeake Bay is a major estuary that supports diverse aquatic life, including blue crabs, oysters, and migratory fish. Nutrient pollution from wastewater is a key concern, and the plant's performance affects downstream water quality and the bay's recovery efforts.