Plainfield WWTF - Advanced Wastewater Treatment in Marshfield, Vermont

Plainfield WWTF is a municipal wastewater treatment facility located in Marshfield, Vermont, serving a small population of 1,005 residents. The plant provides advanced treatment, ensuring high-quality effluent before discharge into the local watershed. With a designed capacity of 473.18 thousand cubic meters and an annual discharge volume of 215.77 thousand cubic meters, the plant operates at approximately 46% capacity. As a US facility, it is subject to the Clean Water Act and likely operates under an EPA NPDES permit issued by the Vermont Department of Environmental Conservation, which sets effluent limits to protect water quality. The plant discharges into a receiving water body within the Winooski River basin, which flows into Lake Champlain. Lake Champlain is a large freshwater lake that supports diverse aquatic life and is a critical resource for recreation and drinking water. The advanced treatment helps minimize nutrient loading, which is particularly important for preventing algal blooms in the lake.

The plant discharges into the Winooski River watershed, which drains into Lake Champlain, a large freshwater lake shared by Vermont and New York. Lake Champlain is ecologically sensitive, supporting diverse fish populations and serving as a migratory corridor for birds. Advanced treatment at this plant helps reduce phosphorus and nitrogen inputs, which are key to controlling eutrophication in the lake.