Carmel T SD4 STP Lake Secor - Advanced Wastewater Treatment in Town of Carmel, New York

Carmel T SD4 STP Lake Secor is an advanced wastewater treatment facility located in the Town of Carmel, Putnam County, New York. The plant serves a population of approximately 1,600 residents and is part of the municipal wastewater infrastructure for the Mahopac Falls area. It operates with a designed capacity of 757.08 thousand gallons per day and currently discharges 537.53 thousand gallons per day of treated effluent. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. As a facility in the United States, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, typically administered by the New York State Department of Environmental Conservation. Advanced treatment is often required for discharges to sensitive water bodies or to meet stringent water quality standards. The treated effluent from the plant is discharged into the local watershed, which drains into Lake Secor and eventually into the Croton River system, a tributary of the Hudson River. The Hudson River estuary is a critical ecological corridor supporting diverse aquatic life, including migratory fish such as striped bass and American shad. The plant's advanced treatment helps protect downstream water quality in this ecologically significant region.

The plant discharges into the Lake Secor watershed, which flows into the Croton River, a major tributary of the Hudson River. The Hudson River estuary is a vital habitat for numerous fish species and supports a rich ecosystem. Advanced treatment at this plant helps reduce nutrient loading and protects water quality in the downstream Hudson River, which is a designated American Heritage River and supports recreational and ecological uses.