Arkansas City WWTP - Secondary Treatment Plant in Desha County, Arkansas

Arkansas City WWTP is a municipal wastewater treatment facility located in Desha County, Arkansas, United States. The plant serves a small population of 366 residents, reflecting its role in a rural community within the Mississippi River Delta region. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater. Its designed capacity is 378.54 thousand cubic meters per year, with an actual discharge volume of 321.76, indicating moderate utilization. Facilities of this scale typically hold National Pollutant Discharge Elimination System (NPDES) permits issued by the Arkansas Department of Energy and Environment. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River, a major river system that flows into the Gulf of Mexico. The plant's operations contribute to protecting downstream water quality in the Mississippi River Basin, which supports diverse aquatic life and provides drinking water for millions. The surrounding area is characterized by agricultural land and wetlands, making proper wastewater treatment essential for maintaining ecological balance.

The plant discharges into tributaries of the Mississippi River, which flows through the Mississippi River Delta and into the Gulf of Mexico. This watershed supports a rich ecosystem including fish, migratory birds, and aquatic plants. The Mississippi River is a critical waterway for commerce and ecology, and its nutrient levels are closely monitored to prevent hypoxia in the Gulf. The plant's secondary treatment helps reduce organic and nutrient loads, contributing to the health of this vast river system.