Salem City CS_STP Wastewater Treatment Plant, Salem, New Jersey

Salem City CS_STP is a municipal wastewater treatment facility located on Grieves Parkway in Salem, New Jersey. The plant serves a population of approximately 6,679 residents in Salem County, classifying it as a small to medium agglomeration under US regulatory frameworks. Its designed capacity is 1.00 million gallons per day, reflecting the scale of the local community. As a US-based 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 plants of this size, secondary treatment is typically required, with additional nutrient removal standards in sensitive watersheds like the Delaware River Basin. The plant's treated effluent ultimately reaches the Delaware River, a major waterway that flows into Delaware Bay and the Atlantic Ocean. The Delaware River supports diverse aquatic life, including migratory fish species such as American shad and sturgeon, and provides drinking water for millions of people. The plant's discharge is regulated to protect these downstream ecological and human uses.

The plant discharges into the Delaware River watershed, which drains into Delaware Bay and the Atlantic Ocean. The Delaware River is a critical habitat for migratory fish and supports a variety of aquatic species. The watershed is subject to nutrient management regulations to prevent eutrophication in the bay and coastal waters.