Somerset Raritan Valley RSA CS_STP Wastewater Treatment Plant, Bridgewater Township, New Jersey

Somerset Raritan Valley RSA CS_STP is a municipal wastewater treatment plant located in Bridgewater Township, Somerset County, New Jersey. It serves a population of approximately 96,089 residents, classifying it as a medium-to-large agglomeration under US regulatory frameworks. The plant is situated in the Raritan River basin, a key watershed in central New Jersey. As a US facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the New Jersey Department of Environmental Protection. For a plant serving nearly 100,000 people, secondary treatment is the minimum standard, with potential requirements for advanced treatment depending on the sensitivity of the receiving water body. The designed capacity is 1.00 million gallons per day, indicating the plant's scale. The plant's treated effluent is discharged into the Raritan River, which flows into Raritan Bay and ultimately the Atlantic Ocean. The Raritan River supports diverse aquatic life and is an important migratory corridor for fish species. The plant plays a critical role in protecting water quality in this densely populated region, reducing nutrient and pollutant loads to the river and downstream estuary.

The plant discharges into the Raritan River, a major tributary of Raritan Bay and the Atlantic Ocean. The Raritan River watershed supports diverse aquatic ecosystems, including fish spawning habitats and migratory corridors. The downstream Raritan Bay is an ecologically sensitive estuary that provides nursery grounds for marine species and supports recreational fisheries. Protecting water quality in this system is essential for maintaining regional biodiversity and public health.