Prince Frederick WWTP II - Advanced Wastewater Treatment in Prince Frederick, Maryland

Prince Frederick WWTP II is a municipal wastewater treatment plant located in Prince Frederick, Calvert County, Maryland, United States. The facility serves a small population of around 1,193 residents, reflecting its role in a rural to suburban community on the western shore of the Chesapeake Bay. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,135.62 million gallons per day and an average discharge volume of 965.28 million gallons per day, it operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for such facilities. These permits set strict limits on effluent quality to protect receiving waters. The treated effluent from Prince Frederick WWTP II is discharged into local waterways that ultimately drain into the Chesapeake Bay, the largest estuary in the United States. The Chesapeake Bay watershed is ecologically sensitive, supporting diverse aquatic life including oysters, blue crabs, and migratory fish. Advanced treatment at this plant helps reduce nutrient loading, which is critical to combating eutrophication and hypoxia in the bay.

The plant discharges into tributaries of the Chesapeake Bay, a vast estuary that receives drainage from over 150 rivers and streams across six states. The bay's ecosystem is highly productive but vulnerable to nutrient pollution, which can cause harmful algal blooms and dead zones. Advanced treatment at this facility helps mitigate these impacts by reducing nitrogen and phosphorus loads, supporting the health of submerged aquatic vegetation and fisheries.