Woonsocket Regional WWTF - Woonsocket, Rhode Island Wastewater Treatment Plant

The Woonsocket Regional WWTF is a municipal wastewater treatment facility located in Woonsocket, Rhode Island, serving a population of about 71,000. It is situated in Providence County and plays a key role in managing wastewater for the region. The plant operates under the US Clean Water Act, which requires secondary treatment for municipal facilities of this scale. The designed capacity is 1.00 million gallons per day, indicating a medium-sized plant. Regulatory oversight is provided by the Rhode Island Department of Environmental Management under EPA NPDES permits. The plant discharges treated effluent into the Blackstone River, which flows south to Narragansett Bay and ultimately the Atlantic Ocean. The Blackstone River is part of the larger Narragansett Bay watershed, supporting diverse aquatic life and recreational uses. Proper treatment helps protect downstream water quality in this ecologically important estuary.

The plant's treated effluent enters the Blackstone River, a major tributary of Narragansett Bay. The Blackstone River flows through urban and suburban areas before reaching the bay, which is a productive estuary supporting fisheries, shellfish, and migratory birds. Protecting water quality in this watershed is critical for maintaining the ecological health of Narragansett Bay and its coastal habitats.