Rockaway Valley RSA CS_STP Wastewater Treatment Plant, Parsippany-Troy Hills, New Jersey

Rockaway Valley RSA CS_STP is a municipal wastewater treatment plant located in Parsippany-Troy Hills, Morris County, New Jersey. It serves a population of approximately 114,549, classifying it as a large agglomeration under US regulatory frameworks. The plant is situated near Lake Hiawatha and discharges into the Rockaway River watershed. 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 of this scale, secondary treatment is the minimum standard, with potential nutrient removal requirements to protect sensitive downstream waters. The designed capacity is 1.00 million gallons per day, indicating the plant's treatment capacity. The plant's treated effluent flows into the Rockaway River, a tributary of the Passaic River, which ultimately drains into Newark Bay and the Atlantic Ocean. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant plays a critical role in maintaining water quality in this densely populated region of northern New Jersey.

The plant discharges into the Rockaway River, which flows into the Passaic River and then into Newark Bay, an estuary of the Atlantic Ocean. This watershed is ecologically sensitive, supporting fish species such as striped bass and American shad, and providing habitat for migratory birds. The plant's operations help protect downstream water quality in a region affected by urban runoff and industrial legacy.