Thomaston WPCF - Water Pollution Control Facility in Thomaston, Connecticut

Thomaston Water Pollution Control Facility (WPCF) is a municipal wastewater treatment plant located in Thomaston, Connecticut, within the Naugatuck Valley Planning Region. The facility serves a population of approximately 5,000 people, making it a small-scale treatment plant typical of rural communities in New England. As a US-based plant, Thomaston WPCF operates under the Clean Water Act and is regulated through the National Pollutant Discharge Elimination System (NPDES) permit program. For plants of this scale, secondary treatment is the standard requirement under federal regulations. The plant discharges treated wastewater into a local waterway that ultimately drains into the Naugatuck River, a tributary of the Housatonic River, which flows into Long Island Sound. The facility plays a key role in protecting downstream water quality and the ecological health of the Housatonic River watershed.

The plant's treated effluent enters a tributary of the Naugatuck River, which flows into the Housatonic River and eventually reaches Long Island Sound. This watershed supports diverse aquatic life, including migratory fish species, and is an important ecological corridor in western Connecticut. The facility's discharge contributes to maintaining water quality standards in the downstream river system.