Greensville STP - Staunton, Virginia Wastewater Treatment Plant

Greensville STP (Sewage Treatment Plant) is a municipal wastewater facility located at 43 Stuarts Draft Highway in Staunton, Augusta County, Virginia. The plant serves a population of approximately 2,000 residents and operates under the regulatory framework of the United States Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant provides secondary treatment, a standard level required for most municipal facilities in the U.S. to reduce organic matter and suspended solids. With a designed capacity of 946.35 cubic meters per day and an actual discharge volume of 757.08 cubic meters per day, the facility operates below its capacity, indicating room for future growth or seasonal variations. The treated effluent from Greensville STP ultimately drains into the Chesapeake Bay watershed, one of the largest estuaries in the United States. The plant's location in inland Virginia means its discharge contributes to freshwater streams that flow into the bay, supporting diverse aquatic life and requiring careful nutrient management to prevent eutrophication.

Greensville STP discharges into local tributaries of the Shenandoah River, which flows northward to join the Potomac River and eventually empties into the Chesapeake Bay. The Chesapeake Bay is a large, ecologically sensitive estuary that supports diverse aquatic life, including blue crabs, oysters, and migratory fish. Nutrient loading from wastewater treatment plants is a key concern in this watershed, as excess nitrogen and phosphorus can lead to harmful algal blooms and hypoxia. The plant's secondary treatment helps reduce these pollutants, but ongoing regulatory efforts under the Chesapeake Bay Total Maximum Daily Load (TMDL) program aim to further reduce nutrient inputs.