Smithfield Sewer Authority Wastewater Treatment Plant, Smithfield, Rhode Island

Smithfield Sewer Authority is a municipal wastewater treatment plant located in Smithfield, Providence County, Rhode Island. It serves a population of approximately 13,000 residents in the Esmond area and surrounding communities. The facility is part of the state's wastewater infrastructure, managing flows from residential and commercial sources. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal facilities of this scale. The National Pollutant Discharge Elimination System (NPDES) permits govern discharge limits to protect water quality. The plant's designed capacity is 1.00 million gallons per day, indicating it is sized for the community's needs. The treated effluent is discharged into local streams that flow into the Blackstone River watershed, which ultimately drains to Narragansett Bay and the Atlantic Ocean. This watershed supports diverse aquatic life and is an important ecological corridor in southern New England. The plant's operations help maintain water quality in this sensitive coastal region.

The plant discharges into tributaries of the Blackstone River, which flows into Narragansett Bay, a major estuary on the Atlantic coast. The bay supports critical habitats for fish, shellfish, and migratory birds. Protecting water quality in this watershed is essential for recreational use and commercial fisheries.