Suffolk Co SCSD 14 Parkland STP - Town of Islip, New York Wastewater Treatment Plant

Suffolk Co SCSD 14 Parkland STP is a municipal wastewater treatment plant located in the Town of Islip, Suffolk County, New York. It serves a population of approximately 10,010 residents, classifying it as a medium-sized facility under U.S. regulatory standards. The plant is situated in a suburban area on Long Island, near the South Shore. As a U.S. facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the New York State Department of Environmental Conservation. For a plant serving around 10,000 people, secondary treatment is typically required, with possible additional nutrient removal to protect sensitive coastal waters. The plant's treated effluent is discharged into the local watershed, which ultimately drains into the Great South Bay, a coastal lagoon on the Atlantic Ocean. This bay supports diverse aquatic life, including shellfish and finfish, and is an important ecological and recreational resource. The plant's proximity to the coast underscores the need for effective treatment to protect water quality in the bay.

The plant discharges into the Great South Bay via local tributaries. The bay is a shallow coastal lagoon separated from the Atlantic Ocean by barrier islands, supporting eelgrass beds, shellfish populations, and migratory birds. Nutrient loading from wastewater can contribute to algal blooms and hypoxia, making treatment performance critical for bay health.