Medfield Sewer Commission - Wastewater Treatment in Medfield, Massachusetts

Medfield Sewer Commission is a municipal wastewater treatment facility located in Medfield, Massachusetts, serving a population of approximately 4,275 residents. The plant operates under the regulatory framework of the U.S. Clean Water Act, administered by the Massachusetts Department of Environmental Protection (MassDEP). As a small-to-medium agglomeration, the facility is expected to meet secondary treatment standards to protect water quality in the region. The plant has a designed capacity of 1.00 million gallons per day, reflecting the scale of the community it serves. Treatment processes at plants of this size typically include primary and secondary treatment stages, such as activated sludge or trickling filters, to reduce organic pollutants and suspended solids before discharge. The facility's operations are overseen by the Medfield Sewer Commission, which manages the collection and treatment of wastewater from residential and commercial sources. Treated effluent from the plant is discharged into receiving waters that ultimately flow into the Charles River, a major waterway in eastern Massachusetts. The Charles River watershed supports diverse aquatic life and recreational activities, and the plant's discharge is regulated under a National Pollutant Discharge Elimination System (NPDES) permit to ensure compliance with water quality standards. The plant plays a key role in protecting downstream ecosystems and public health.

The plant discharges into the Charles River watershed, which drains into Boston Harbor and the Atlantic Ocean. The Charles River is an important ecological corridor for fish species such as herring and bass, and supports recreational uses like boating and fishing. The watershed is subject to nutrient management efforts to prevent algal blooms and maintain dissolved oxygen levels.