Eufaula PWA WWT Wastewater Treatment Plant, Eufaula, Oklahoma

Eufaula PWA WWT is a municipal wastewater treatment facility located in Eufaula, Oklahoma, serving a population of 2,639. The plant provides secondary treatment, a standard level for small communities in the United States, and operates under the regulatory framework of the Clean Water Act, which requires NPDES permits for discharges into waters of the United States. The plant has a designed capacity of 1,362.74 thousand cubic meters and an actual discharge volume of 984.21 thousand cubic meters, indicating it operates below its design capacity. As a secondary treatment facility, it uses biological processes to reduce organic matter and suspended solids, meeting typical effluent standards for small agglomerations. The treated effluent is discharged into local waterways that ultimately drain into the Arkansas River basin, contributing to the Mississippi River watershed. The plant plays a key role in protecting downstream water quality and aquatic ecosystems in the region.

The plant discharges into a tributary of the Canadian River, which flows into the Arkansas River and eventually the Mississippi River. The local watershed supports diverse aquatic life and is important for regional water resources. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, protecting downstream habitats and water quality.