NASH PWA WWT - Grant County, Oklahoma Wastewater Treatment Plant

NASH PWA WWT is a municipal wastewater treatment facility located in Grant County, Oklahoma, United States. The plant serves a small population of 224 residents, reflecting its role in a rural community. Its location along US 64 and OK 132 places it within the central plains region of the state. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater facilities. With a designed capacity of 166.56 thousand cubic meters per year and an actual discharge volume of 75.71 thousand cubic meters per year, the plant operates well within its capacity. As a small facility, it is subject to EPA National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent from NASH PWA WWT is discharged into local waterways that ultimately drain into the Arkansas River basin. This river system flows through Oklahoma and Arkansas before joining the Mississippi River, which empties into the Gulf of Mexico. The plant's operations help protect downstream aquatic habitats and maintain water quality in the region.

The plant discharges into the Arkansas River basin, which flows through the Great Plains and eventually reaches the Mississippi River and the Gulf of Mexico. This watershed supports diverse aquatic life and is an important resource for agriculture and recreation in Oklahoma. The secondary treatment process reduces organic pollutants and suspended solids, helping to maintain the ecological health of downstream waters.