Casselberry STP - Wastewater Treatment Plant in Casselberry, Florida

Casselberry STP is a municipal wastewater treatment facility located in Casselberry, Seminole County, Florida. The plant serves a population of about 10,750 residents, classifying it as a small-to-medium agglomeration under U.S. regulatory standards. It is situated inland, more than 50 kilometers from the Atlantic coast, and contributes to the region's water management infrastructure. Under the U.S. Clean Water Act, wastewater treatment plants of this scale are typically required to meet secondary treatment standards through National Pollutant Discharge Elimination System (NPDES) permits issued by the Florida Department of Environmental Protection. These permits set effluent limits for biochemical oxygen demand, total suspended solids, and nutrients to protect receiving water quality. The plant's treatment process and capacity are designed to comply with these federal and state regulations. The treated effluent from Casselberry STP discharges into local surface waters that ultimately drain into the St. Johns River, a major waterway in northeastern Florida. The St. Johns River flows northward to the Atlantic Ocean near Jacksonville, supporting diverse aquatic ecosystems, including wetlands and estuarine habitats. The plant plays a key role in protecting downstream water quality and maintaining the ecological health of the river basin.

Casselberry STP discharges into tributaries of the St. Johns River, which flows north through Florida to the Atlantic Ocean. The St. Johns River basin supports a variety of aquatic life, including fish, turtles, and wading birds, and its floodplain wetlands provide critical habitat and water filtration. The plant's nutrient removal is important for preventing algal blooms in the river and downstream estuaries.