NEWCASTLE PWA WWT - Newcastle, Oklahoma Wastewater Treatment Plant

NEWCASTLE PWA WWT is a municipal wastewater treatment plant located in Newcastle, Oklahoma, serving a population of about 5,940. The facility is situated inland, more than 50 kilometers from the coast, and is part of the town's public works infrastructure. As a U.S. plant serving a small agglomeration, it operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits typically issued by the Oklahoma Department of Environmental Quality. For communities of this size, secondary treatment is the standard requirement to meet effluent limitations. The plant's treated effluent likely discharges into a local waterway that drains into the Washita River or the Canadian River system, eventually reaching the Red River and the Gulf of Mexico. This contributes to the ecological health of downstream aquatic habitats.

The plant's discharge enters a tributary of the Washita River basin, which flows into the Red River and ultimately the Gulf of Mexico. The receiving waters support diverse aquatic life and are part of a larger watershed that provides habitat for fish and migratory birds. Protecting water quality in this region is important for maintaining ecological balance and recreational uses.