Greenway WWTP - Advanced Wastewater Treatment in Clay County, Arkansas

Greenway WWTP is a wastewater treatment facility located in Clay County, Arkansas, serving a small population of 209 residents. The plant is situated in the rural northeastern part of the state, near the Missouri border, and operates under the regulatory framework of the United States Clean Water Act. The plant employs advanced treatment processes, which go beyond secondary treatment to remove additional nutrients and contaminants. With a designed capacity of 223.34 million gallons per day and an actual discharge volume of 3.79 million gallons per day, the facility has significant reserve capacity. This suggests it may serve future growth or industrial needs in the area. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant's advanced treatment helps protect downstream water quality in the Mississippi River and the Gulf of Mexico, supporting aquatic life and reducing nutrient loading that can contribute to hypoxic zones.

Greenway WWTP discharges into tributaries of the St. Francis River, which flows into the Mississippi River and eventually the Gulf of Mexico. The plant's advanced treatment reduces nutrient pollution, helping to mitigate the hypoxic zone in the Gulf. The surrounding watershed supports diverse aquatic habitats and is important for migratory birds along the Mississippi Flyway.