DEWAR WWT Wastewater Treatment Plant, Okmulgee County, Oklahoma

DEWAR WWT is a municipal wastewater treatment facility located in Okmulgee County, Oklahoma, United States. The plant serves a population of 919 residents, providing secondary treatment to meet regulatory standards for discharge into the local environment. The facility operates with a designed capacity of 416.39 units and currently treats an average daily flow of 302.83 units, indicating operational headroom. As a secondary treatment plant, it employs biological processes to reduce organic matter and suspended solids, consistent with typical requirements for small communities under the U.S. Clean Water Act. The treated effluent is discharged into a receiving water body within the Arkansas River basin, which ultimately drains into the Mississippi River and the Gulf of Mexico. The plant plays a role in protecting local water quality and downstream ecosystems, including the diverse aquatic habitats of the Mississippi River watershed.

The plant discharges into a tributary of the Arkansas River, which flows into the Mississippi River and eventually the Gulf of Mexico. This watershed supports a variety of aquatic life and is important for regional biodiversity. The secondary treatment process helps reduce nutrient and pollutant loads, mitigating impacts on downstream water quality and ecosystems.