DeWitt WWTP - Arkansas County, Arkansas Wastewater Treatment Plant

DeWitt WWTP is a municipal wastewater treatment facility located in Arkansas County, Arkansas, United States. It serves a population of approximately 3,292 residents, classifying it as a small community system under US EPA guidelines. The plant operates under the regulatory framework of the Clean Water Act, which requires secondary treatment as the minimum standard for municipal wastewater facilities. The plant employs secondary treatment processes, which typically involve biological treatment to remove organic matter and suspended solids. With a designed capacity of 2,793.63 thousand cubic meters per year and an actual discharge volume of 969.07 thousand cubic meters, the plant operates well below its capacity, indicating room for future growth or seasonal variations. As a US facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Arkansas Department of Energy and Environment, ensuring compliance with water quality standards. The treated effluent is discharged into local waterways within the Mississippi River Basin, which ultimately drains into the Gulf of Mexico. The plant plays a key role in protecting downstream aquatic ecosystems by reducing pollutant loads from the community. Its inland location reduces direct marine impact, but its discharge contributes to the overall water quality of the region's rivers and streams.

The plant discharges into the Mississippi River Basin, which flows through the Lower Mississippi River region and eventually reaches the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for fish and birds. The plant's secondary treatment helps reduce nutrient and organic loads, mitigating potential eutrophication in downstream waters.