Mont Alto STP | Wastewater Treatment Plant in Quincy Township, Pennsylvania

Mont Alto STP is a municipal wastewater treatment plant located in Quincy Township, Franklin County, Pennsylvania. The facility serves a population of about 3,985 residents in the surrounding community, operating as part of the region's wastewater infrastructure. As a US-based plant, Mont Alto STP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Pennsylvania Department of Environmental Protection. For a plant serving a small population, secondary treatment is typically required, with possible additional nutrient removal depending on the receiving water body's sensitivity. The plant's treated effluent likely discharges to a local stream within the Potomac River basin, which flows into the Chesapeake Bay. The Chesapeake Bay watershed is a large estuary system that requires careful nutrient management to prevent eutrophication, making treatment standards important for downstream ecological health.

Mont Alto STP discharges into 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 pollution from wastewater is a key concern in this watershed, as excess nitrogen and phosphorus can cause harmful algal blooms and hypoxic zones.