Jefferson Township CS_STP | Advanced Wastewater Treatment Plant in Jefferson Township, New Jersey

Jefferson Township CS_STP is an advanced wastewater treatment facility located in Jefferson Township, Morris County, New Jersey. The plant serves a population of approximately 21,208 residents, providing essential sanitation services to this suburban community in the northern part of the state. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a design capacity of 2,422.66 megaliters per year and an actual discharge volume of 378.54 megaliters per year, the facility operates well below its capacity, indicating room for future growth. As a US facility, it operates under the Clean Water Act's National Pollutant Discharge Elimination System (NPDES) permit program, which sets strict effluent limits to protect water quality. The treated effluent is discharged into local waterways that ultimately drain into the Atlantic Ocean via the Passaic River or Rockaway River watersheds. The plant's advanced treatment helps protect downstream ecosystems, including freshwater habitats and the ecologically sensitive coastal waters of New Jersey, which support diverse aquatic life and recreational activities.

The plant discharges into the Passaic River or Rockaway River watershed, both part of the larger New York-New Jersey Harbor Estuary system. This estuary is a critical habitat for migratory fish, shellfish, and bird species. The advanced treatment reduces nutrient loading, helping to prevent eutrophication and maintain water quality in downstream lakes, rivers, and the Atlantic Ocean.