Poughkeepsie T Arlington STP - Wastewater Treatment Plant in Poughkeepsie, New York

Poughkeepsie T Arlington STP is a municipal wastewater treatment facility located in the City of Poughkeepsie, Dutchess County, New York. The plant serves a population of about 19,900 residents, placing it in the medium-agglomeration category under U.S. regulatory frameworks. As a facility in New York State, 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 (NYSDEC). These permits set effluent limits to protect water quality in the receiving water body. The plant's treatment process is designed to meet secondary treatment standards, which are typical for facilities of this scale in the United States. The treated effluent is discharged into the Hudson River, a major waterway that flows southward through eastern New York and ultimately empties into the Atlantic Ocean at New York Harbor. The Hudson River estuary supports diverse aquatic life, including migratory fish species such as striped bass and American shad, and provides critical habitat for various wildlife. The plant's location in a densely populated region underscores its role in maintaining water quality and public health in the Hudson Valley.

The plant discharges into the Hudson River, a tidal estuary that flows approximately 315 miles from the Adirondack Mountains to the Atlantic Ocean. The Hudson River estuary is ecologically significant, supporting a variety of fish, birds, and plant species, and serves as an important migratory corridor for anadromous fish. The river's watershed encompasses diverse land uses, including urban, agricultural, and forested areas, which influence water quality. The plant's discharge must comply with state and federal standards to protect this sensitive ecosystem.