Suffolk Co SCSD 15 NOB HILL Wastewater Treatment Plant, Brentwood, New York

Suffolk Co SCSD 15 NOB HILL is a wastewater treatment plant located on Old Nichols Road in Brentwood, Suffolk County, New York. It serves a population of 1,174 people as part of the Suffolk County Sewer District 15, providing advanced treatment to protect local water quality. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 340.69 million gallons per year and an actual discharge volume of 208.20 million gallons per year, it operates at about 61% capacity. As a US facility, it 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. The plant's treated effluent is discharged into local waterways that ultimately drain into the Atlantic Ocean via the Great South Bay. The plant plays a critical role in protecting the sensitive coastal ecosystem of Long Island, which supports diverse marine life and recreational activities. Its advanced treatment helps reduce nitrogen loading, a key concern for the region's estuaries.

The plant discharges into the Great South Bay, a coastal lagoon on the south shore of Long Island, which connects to the Atlantic Ocean. The bay is an ecologically sensitive area that supports shellfish beds, finfish, and migratory birds. Advanced treatment at this plant helps mitigate nutrient pollution, which can cause algal blooms and hypoxia in the bay's shallow waters.