Suffolk Co SCSD YaphankCommCSTP Wastewater Treatment Plant, Town of Brookhaven, New York

Suffolk Co SCSD YaphankCommCSTP is a municipal wastewater treatment plant located on Pine Street in the Town of Brookhaven, Suffolk County, New York. The plant serves a population of approximately 2,500 residents and operates under secondary treatment standards, which is the baseline requirement for most U.S. publicly owned treatment works under the Clean Water Act. The plant has a designed capacity of 946.35 megaliters per year and currently discharges 363.40 megaliters annually. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids before discharge. The plant is situated in a coastal region, less than 10 kilometers from the Atlantic Ocean, which influences its operational and regulatory requirements. The treated effluent from this plant ultimately drains into the South Shore Estuary and the Atlantic Ocean. The surrounding watershed includes the Carmans River and other coastal streams that support diverse aquatic life and recreational activities. The plant's proximity to ecologically sensitive marine environments necessitates careful management of nutrient loads to prevent eutrophication and protect coastal habitats.

The plant discharges into the South Shore Estuary system, which flows into the Great South Bay and ultimately the Atlantic Ocean. This coastal watershed supports diverse marine life, including shellfish beds and finfish populations, and is an important migratory corridor for birds. The estuary is ecologically sensitive to nutrient pollution, making secondary treatment with potential nutrient removal critical for maintaining water quality.