COPAN WWT Wastewater Treatment Plant, Copan, Oklahoma

COPAN WWT is a municipal wastewater treatment facility located in Copan, Oklahoma, United States. The plant serves the local community of about 796 people, providing essential sanitation services for this small town in Washington County. The plant operates at the secondary treatment level, which is the standard required by the US Clean Water Act for municipal wastewater facilities. With a design capacity of 397.47 volume units and a current discharge volume of 227.13 volume units, the plant operates below its designed capacity, indicating adequate treatment capacity for the served population. The treated effluent from COPAN WWT is discharged into the local watershed, which ultimately drains into the Caney River and then into the Verdigris River system. This river network flows into the Arkansas River and eventually reaches the Mississippi River, highlighting the plant's role in protecting downstream water quality in a region characterized by agricultural and rural landscapes.

The plant discharges into the Caney River watershed, which flows into the Verdigris River and then the Arkansas River, part of the Mississippi River basin. This region supports diverse aquatic life and is important for migratory birds. The secondary treatment process helps reduce organic pollutants and protect the ecological health of the downstream river system.