Piermont WWTF - Secondary Wastewater Treatment in Enfield, New Hampshire

Piermont WWTF is a wastewater treatment facility located on Grafton Pond Road in Enfield, New Hampshire, within Grafton County. The plant serves a small population of 107 residents, reflecting its role in a rural community. As a secondary treatment plant, it provides biological treatment to remove organic matter and suspended solids from wastewater. The plant has a designed capacity of 26.50 million gallons per year and currently discharges 15.14 million gallons per year, indicating operational headroom. Under the U.S. Clean Water Act, facilities of this scale are typically regulated through the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the New Hampshire Department of Environmental Services. Secondary treatment is the standard requirement for municipal wastewater plants in the United States. The treated effluent from Piermont WWTF is discharged into a local water body, likely a stream or pond within the Connecticut River watershed. The Connecticut River flows southward through New Hampshire and eventually drains into Long Island Sound, an estuary of the Atlantic Ocean. The plant's operations help protect downstream water quality and aquatic habitats in this ecologically important region.

Piermont WWTF discharges into a local water body within the Connecticut River basin. The Connecticut River flows through New Hampshire and Massachusetts before emptying into Long Island Sound, a major estuary supporting diverse marine life. The plant's secondary treatment helps reduce nutrient and pollutant loads, protecting downstream ecosystems including fish spawning grounds and migratory bird habitats.