Shattuck WWT Wastewater Treatment Plant, Ellis County, Oklahoma

Shattuck WWT is a municipal wastewater treatment facility located in Ellis County, Oklahoma, serving a population of approximately 1,310 residents. The plant operates under the regulatory framework of the United States Clean Water Act, which requires secondary treatment for municipal discharges. As a small-scale facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Oklahoma Department of Environmental Quality. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. It has a designed capacity of 567.81 m³/day and currently treats an average daily flow of 529.96 m³/day, indicating it operates near its design capacity. The treatment process typically includes aeration, settling, and disinfection before discharge. The treated effluent is discharged into local streams that drain into the North Canadian River basin, eventually reaching the Arkansas River and the Mississippi River system. This watershed supports agricultural activities and provides habitat for aquatic species. Proper treatment helps protect downstream water quality and ecosystems in the Southern Great Plains region.

The plant discharges into local waterways that flow into the North Canadian River, a tributary of the Arkansas River, which ultimately drains into the Mississippi River and the Gulf of Mexico. The surrounding region is semi-arid with agricultural land use, making water quality protection important for irrigation and livestock. The effluent contributes to base flow in intermittent streams, supporting aquatic life and riparian habitats.