Marshfield W P C Wastewater Treatment Plant, Marshfield Vermont

Marshfield W P C is a municipal wastewater treatment facility located at 219 School Street in Marshfield, Vermont. Serving a population of 601, the plant provides secondary treatment for the community's domestic wastewater. It operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal plants of this scale. The plant has a designed capacity of 170.34 million gallons per year and currently discharges 75.71 million gallons annually, indicating it operates well below its capacity. As a secondary treatment facility, it uses biological processes to reduce organic matter and suspended solids before discharge. The plant is permitted under the National Pollutant Discharge Elimination System (NPDES), administered by the Vermont Department of Environmental Conservation. The treated effluent is discharged into a local water body that eventually drains into the Winooski River watershed, which flows into Lake Champlain. Lake Champlain is a large freshwater lake that supports diverse aquatic life and is an important recreational and ecological resource in the region. The plant's operations help protect downstream water quality in this sensitive watershed.

The plant discharges into a tributary of the Winooski River, which flows into Lake Champlain. Lake Champlain is a major freshwater lake that supports diverse aquatic species and provides drinking water, recreation, and habitat. The watershed is ecologically sensitive due to nutrient loading concerns, and the plant's secondary treatment helps reduce pollutants that could contribute to algal blooms in the lake.