Great Barrington Public Works Wastewater Treatment Plant, Massachusetts

Great Barrington Public Works is a municipal wastewater treatment facility located in Great Barrington, Berkshire County, Massachusetts, United States. The plant serves a population of approximately 7,383 residents, making it a small to medium-sized agglomeration under US EPA classification. 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 discharges treated wastewater into the Housatonic River watershed, which flows south through Massachusetts and Connecticut before emptying into Long Island Sound. This water body supports diverse aquatic life and is an important regional resource for recreation and ecology.

The plant discharges into the Housatonic River basin, which drains into Long Island Sound, an ecologically significant estuary. The river supports fish populations including trout and bass, and the downstream sound provides critical habitat for marine species. The plant's operations are regulated to protect these downstream ecosystems from nutrient pollution and other contaminants.