Fort Cobb WWT Wastewater Treatment Plant, Fort Cobb, Oklahoma

Fort Cobb WWT is a municipal wastewater treatment facility located in Fort Cobb, Oklahoma, a small town in Caddo County. The plant serves a population of 667 and operates under the regulatory framework of the United States Clean Water Act, which requires secondary treatment for municipal wastewater. As a small-scale facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Oklahoma Department of Environmental Quality, ensuring compliance with effluent limits designed to protect local water quality. The plant provides secondary treatment, a biological process that removes organic matter and suspended solids. Its designed capacity is 321.76 megaliters, with an actual discharge volume of 287.69 megaliters, indicating it operates below capacity. Secondary treatment typically involves activated sludge or trickling filter systems, followed by disinfection before discharge. The treated effluent is discharged into a local water body, likely a tributary of the Washita River, which flows into the Red River and eventually the Gulf of Mexico. The plant plays a crucial role in protecting the local watershed from untreated sewage, supporting aquatic life and downstream water quality in the Red River basin.

Fort Cobb WWT discharges into a water body within the Washita River watershed, which drains into the Red River and ultimately the Gulf of Mexico. The local environment includes agricultural land and small water bodies that support diverse aquatic species. The plant's secondary treatment helps reduce nutrient loading and organic pollution, protecting downstream ecosystems from eutrophication and maintaining habitat quality for fish and invertebrates.