Westchester Co Blind Brook SD STP - Rye, New York Wastewater Treatment Plant

The Westchester County Blind Brook Sanitary District Sewage Treatment Plant (STP) is a municipal wastewater facility located at 138 Oakland Beach Avenue in the Milton neighborhood of Rye, New York. It serves a population of approximately 22,176 residents within the Blind Brook sewer district, part of Westchester County's wastewater infrastructure. As a US facility, the plant operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, administered by the New York State Department of Environmental Conservation. For a plant serving a medium-sized community of this scale, secondary treatment is the federal minimum standard, though many facilities in sensitive coastal areas employ advanced treatment to reduce nutrient loads. The plant's treated effluent discharges to Blind Brook, which flows into the Long Island Sound, a major estuary supporting diverse marine life, including shellfish beds and migratory fish. The Sound's ecological health is closely tied to nutrient management from wastewater plants, making treatment performance critical for local water quality.

The plant discharges into Blind Brook, a small coastal stream that empties into western Long Island Sound near the Rye shoreline. The Sound is a vital estuary supporting commercial and recreational fisheries, shellfish harvesting, and bird habitats. Nutrient loading from wastewater can contribute to algal blooms and hypoxia, so the plant's treatment level is important for maintaining the ecological balance of this urbanized coastal watershed.