Suffern V STP - Wastewater Treatment Plant in Suffern, New York

Suffern V STP is a municipal wastewater treatment plant located at 54 A Ridge Avenue in the Village of Suffern, Rockland County, New York. It serves a population of about 11,506 people, classifying it as a medium-sized facility under state and federal guidelines. The plant's designed capacity is 1.00 million gallons per day, reflecting its role in managing local wastewater flows. As a U.S. facility, Suffern V STP operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, administered by the New York State Department of Environmental Conservation. Plants of this scale typically provide secondary treatment as a minimum, with possible nutrient removal depending on the receiving water's sensitivity. The plant discharges treated effluent to a local waterway, likely a tributary of the Ramapo River or the Hackensack River, which ultimately flows into the Atlantic Ocean via the New York-New Jersey Harbor Estuary. This region supports diverse aquatic life and is an important ecological corridor. The plant's operation helps protect downstream water quality in a densely populated suburban area.

Suffern V STP discharges into a local stream that feeds into the Ramapo River, part of the Passaic River watershed, which drains into Newark Bay and the Atlantic Ocean. The downstream environment includes the Hackensack Meadowlands, a critical estuarine habitat for migratory birds and fish. The plant's treatment helps reduce nutrient and pollutant loads, supporting the ecological health of these interconnected water bodies.