Antrim Township STP Wastewater Treatment Plant, Pennsylvania

Antrim Township STP is a municipal wastewater treatment facility located in Antrim Township, Franklin County, Pennsylvania. The plant serves a population of approximately 6,511 residents in the Worleytown area along Worleytown Road. As a small to medium-sized facility, it plays a key role in managing local wastewater for this rural community. Under the US Clean Water Act, plants of this scale are typically required to meet secondary treatment standards through EPA NPDES permits issued by the Pennsylvania Department of Environmental Protection. The regulatory framework ensures that effluent quality protects receiving waters, with permit limits based on the specific characteristics of the local watershed. The plant discharges into the Conococheague Creek watershed, which flows into the Potomac River and ultimately the Chesapeake Bay. This places the facility within the Chesapeake Bay drainage basin, where nutrient reduction is a priority to protect the bay's ecosystem. The plant's operations contribute to maintaining water quality in this sensitive estuarine environment.

The plant discharges into the Conococheague Creek, a tributary of the Potomac River, which flows into the Chesapeake Bay. The Chesapeake Bay is the largest estuary in the United States and supports diverse aquatic life, including blue crabs, oysters, and migratory fish. Nutrient and sediment loads from upstream sources are a key concern for bay health, making effective wastewater treatment critical for downstream ecological balance.