Mannford PWA Main WWT - Secondary Wastewater Treatment Plant in Mannford, Oklahoma

The Mannford PWA Main WWT is a municipal wastewater treatment facility located in Mannford, Oklahoma, along the 42nd 'Rainbow' Infantry Division Memorial Highway. It serves a population of approximately 1,716 residents in this small community within Creek County. The plant operates under the regulatory framework of the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater to protect water quality. The plant has a designed capacity of 1,892.70 cubic meters per day and currently treats an average daily flow of 681.37 cubic meters, indicating it operates well below its capacity. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids, meeting the national standards set by the EPA for discharge into surface waters. The treated effluent is discharged into local streams that eventually flow into the Arkansas River watershed, which drains into the Mississippi River and ultimately the Gulf of Mexico. This plant plays a key role in protecting the aquatic ecosystems of the region by reducing pollutant loads before discharge.

The plant discharges into the Arkansas River basin, which flows through Oklahoma and Arkansas before joining the Mississippi River. This watershed supports diverse aquatic life, including fish species such as catfish and bass, and provides habitat for migratory birds. The plant's secondary treatment helps maintain water quality in the downstream environment, reducing nutrient loads that could contribute to algal blooms in the Gulf of Mexico.