Westchester CoPort Chester SD STP, Greenwich

Overview

Westchester CoPort Chester SD STP serves approximately 28,000 people in Greenwich, Connecticut. The plant is located within 50 km of the coast and discharges treated wastewater into the local watershed.

Westchester CoPort Chester SD STP is a municipal wastewater treatment plant located at 255 Byram Shore Road in Greenwich, Connecticut, serving the Port Chester area. The plant handles wastewater from a population of about 27,967, placing it in the medium agglomeration category under US regulatory frameworks. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The plant's discharge ultimately reaches Long Island Sound, an ecologically significant estuary that supports diverse marine life and is a critical habitat for fish and shellfish. The facility plays a key role in protecting this coastal environment from untreated wastewater impacts.

Environmental context

The plant discharges into the Byram River watershed, which flows into Long Island Sound, a major estuary on the Atlantic coast. Long Island Sound supports diverse aquatic life, including finfish, shellfish, and migratory birds, and is an important recreational and economic resource. The plant's location within 50 km of the coast means its effluent can influence nearshore water quality and ecosystem health.

Frequently asked questions

The plant is located at 255 Byram Shore Road in Greenwich, Connecticut, United States, near the border with New York.

The plant serves approximately 27,967 people, primarily from the Port Chester area and surrounding communities.

The plant discharges into the Byram River, which flows into Long Island Sound, a major estuary on the Atlantic coast.

Under the Clean Water Act, the plant must obtain an NPDES permit that sets limits on pollutants in its discharge to protect water quality in Long Island Sound.

Plants of this size in the US typically provide secondary treatment as a minimum, with some employing advanced treatment to meet specific permit requirements for sensitive water bodies.