Waterford STP - Secondary Wastewater Treatment Plant in Waterford, Virginia

Waterford STP is a municipal wastewater treatment plant located in Waterford, Loudoun County, Virginia. It serves a small population of 626 residents, reflecting its role in a rural community within the broader Washington, D.C. metropolitan area. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for most municipal facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 227.12 megaliters per year and currently discharges 227.13 megaliters annually, indicating near-full utilization. The treated effluent is discharged into local waterways that ultimately drain into the Potomac River and Chesapeake Bay. As part of the Chesapeake Bay watershed, the plant's operations contribute to regional nutrient management efforts aimed at reducing nitrogen and phosphorus loads to the estuary, which supports diverse aquatic life and commercial fisheries.

Waterford STP discharges into streams within the Potomac River basin, which flows into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay watershed is ecologically sensitive, supporting critical habitats for fish, crabs, and migratory birds. Nutrient pollution from wastewater is a key concern, and the plant's secondary treatment helps mitigate impacts on downstream water quality.