Twin Boro STP - Mifflin, Pennsylvania Wastewater Treatment Plant

Twin Boro STP is a municipal wastewater treatment facility located on River Drive in Mifflin, Juniata County, Pennsylvania. The plant serves a population of about 3,237 people, making it a small-scale treatment facility within the state's wastewater infrastructure. As a U.S. facility, Twin Boro STP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting requirements. Plants of this size typically employ secondary treatment processes to meet effluent standards, ensuring compliance with federal and state regulations. The treated effluent from Twin Boro STP is discharged into a local waterway that drains into the Juniata River, a tributary of the Susquehanna River. The Susquehanna ultimately flows into the Chesapeake Bay, a large estuary of ecological significance. The plant plays a role in protecting water quality in this downstream environment.

The plant discharges into a local stream that feeds the Juniata River, which flows into the Susquehanna River and eventually reaches the Chesapeake Bay. The Chesapeake Bay is a major estuarine ecosystem that supports diverse aquatic life, including fish, crabs, and migratory birds. Nutrient and pollutant loads from upstream sources can impact the bay's health, making effective wastewater treatment important for maintaining water quality in this sensitive watershed.