MT SIDNEY FT DEFIANCE STP - Mount Sidney, Virginia Wastewater Treatment Plant

MT SIDNEY FT DEFIANCE STP is a municipal wastewater treatment facility located in Mount Sidney, Augusta County, Virginia, United States. The plant serves a small population of 689 residents and operates as part of the local infrastructure managed by the county or municipal authority. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater facilities. With a designed capacity of 567.81 thousand cubic meters and an annual discharge volume of 264.98 thousand cubic meters, the plant operates below its capacity, indicating room for future growth or seasonal variations. The treated effluent is discharged into a local waterway that ultimately drains into the Chesapeake Bay watershed. The plant's location inland, over 50 km from the coast, reduces direct marine impact, but its discharge contributes to the nutrient and pollutant load in the bay, a sensitive estuary that supports diverse aquatic life and commercial fisheries.

The plant's treated effluent flows into a tributary of the Shenandoah River, which is part of the Potomac River basin and ultimately drains into the Chesapeake Bay. The Chesapeake Bay is a large estuary that supports diverse aquatic life, including blue crabs, oysters, and migratory fish. Nutrient pollution from wastewater discharges can contribute to algal blooms and hypoxia in the bay, making effective treatment crucial for downstream ecosystem health.