Locust Grove PWA WWT - Advanced Wastewater Treatment in Locust Grove, Oklahoma

Locust Grove PWA WWT is a municipal wastewater treatment facility located in Locust Grove, Mayes County, Oklahoma. The plant serves a population of approximately 1,366 residents, providing essential sanitation services for this small community in the northeastern part of the state. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other contaminants. With a designed capacity of 658.66 megaliters per year and an actual discharge volume of 567.81 megaliters, the facility operates at about 86% capacity. As a US plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Oklahoma Department of Environmental Quality. The treated effluent is discharged into a local waterway that ultimately drains into the Arkansas River watershed, which flows through Oklahoma and Arkansas before joining the Mississippi River. The plant's advanced treatment helps protect downstream water quality in this region, which supports diverse aquatic life and recreational uses.

The plant discharges into a tributary of the Arkansas River basin, which flows through the Ozark Plateau and eventually reaches the Mississippi River. This watershed supports diverse aquatic ecosystems, including fish species such as bass and catfish, and provides water for irrigation and recreation. The advanced treatment level helps minimize nutrient loading and protects downstream water quality in this ecologically sensitive region.