Westfield Dept of Public Works Wastewater Treatment Plant, Westfield, Massachusetts

The Westfield Dept of Public Works wastewater treatment plant serves the city of Westfield, located in Hampden County, Massachusetts. With a population served of about 35,728, it is a medium-sized municipal facility in the northeastern United States. The plant is situated near the Westfield River, a tributary of the Connecticut River, which ultimately drains into Long Island Sound. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Massachusetts Department of Environmental Protection. For a community of this size, secondary treatment is typically required, and the plant must meet effluent limits for biochemical oxygen demand, total suspended solids, and other pollutants to protect water quality. The plant's treated effluent is discharged into the Westfield River, which flows into the Connecticut River and then into Long Island Sound. This watershed supports diverse aquatic life, including migratory fish species such as American shad and Atlantic salmon. The plant plays a key role in maintaining water quality in this ecologically important river system.

The plant discharges into the Westfield River, a tributary of the Connecticut River, which flows into Long Island Sound. The Connecticut River watershed is one of the largest in New England, supporting diverse habitats including freshwater wetlands, floodplain forests, and estuarine zones. The Westfield River itself is designated as a coldwater fishery and provides critical spawning habitat for migratory fish. Protecting water quality in this system is essential for maintaining biodiversity and recreational uses.