Aquia Regional STP - Stafford, Virginia Wastewater Treatment Plant

Aquia Regional STP is a municipal wastewater treatment facility located in Stafford, Virginia, serving a population of about 24,819. The plant is situated in the Potomac River basin, a major tributary of the Chesapeake Bay, and operates under the regulatory framework of the US Clean Water Act, which requires NPDES permits for discharges. Plants of this scale in Virginia typically employ secondary or advanced treatment to meet state and federal water quality standards. The designed capacity is 1.00 million gallons per day, indicating a medium-sized facility. The plant's operations are overseen by state and federal authorities to ensure compliance with effluent limits. The treated effluent from Aquia Regional STP discharges into local waterways that flow into the Potomac River, which drains into the Chesapeake Bay. The Chesapeake Bay is a large estuary of ecological significance, supporting diverse aquatic life and important fisheries. The plant's discharge contributes to the nutrient and pollutant load in the watershed, making effective treatment critical for bay health.

The plant discharges into the Potomac River watershed, which flows into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay supports diverse aquatic life, including blue crabs, oysters, and striped bass, and is a critical migratory corridor for birds. Nutrient pollution from wastewater can contribute to algal blooms and hypoxia, making advanced treatment important for protecting this sensitive ecosystem.