Mitchellville WWTP - Advanced Wastewater Treatment in Desha County, Arkansas

Mitchellville WWTP is an advanced wastewater treatment facility located in Desha County, Arkansas, along US 65. The plant serves a small population of 360 residents, reflecting its role in a rural community. As an advanced treatment plant, it provides a higher level of pollutant removal than secondary treatment, ensuring protection of local water quality. The plant has a designed capacity of 227.12 units (likely thousand gallons per day) and a discharge volume of 68.14 units, indicating it operates well below capacity. Under the U.S. Clean Water Act, such facilities must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Arkansas Department of Energy and Environment - Division of Environmental Quality. These permits set effluent limits to protect receiving waters. The treated effluent from Mitchellville WWTP ultimately drains into the Mississippi River watershed via local streams and bayous. The Mississippi River system supports diverse aquatic life and is a major migratory corridor for birds and fish. The plant's advanced treatment helps reduce nutrient and pollutant loads entering this ecologically significant river system.

The plant discharges into local waterways that are part of the Mississippi River basin, one of the largest river systems in North America. The Mississippi River and its tributaries support a wide range of aquatic species and provide critical habitat for migratory waterfowl and fish. Downstream, the river flows into the Gulf of Mexico, where nutrient pollution from upstream sources contributes to seasonal hypoxic zones. Advanced treatment at this plant helps mitigate such impacts.