Addington RWD 1 WWT - Jefferson County, Oklahoma Wastewater Treatment Plant

Addington RWD 1 WWT is a municipal wastewater treatment plant located in Jefferson County, Oklahoma, United States. The facility serves a small population of 117 residents, reflecting its role in a rural community. The plant is situated near US 81 in the southern part of the state. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. Its designed capacity is 37.85 megaliters per year, matching the reported discharge volume. As a small facility, it operates under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Oklahoma Department of Environmental Quality. The treated effluent is discharged into local waterways that ultimately drain into the Red River basin. The Red River flows southward to the Gulf of Mexico, supporting diverse aquatic ecosystems along its course. The plant's operations help protect water quality in this watershed.

The plant discharges into tributaries of the Red River, which flows through Oklahoma and Texas before emptying into the Mississippi River and the Gulf of Mexico. This watershed supports a variety of fish and wildlife, including several species of freshwater mussels and migratory birds. The region's semi-arid climate means that maintaining water quality in these streams is critical for both ecological health and downstream water users.