Overview
El Dorado South WWTP serves approximately 9,400 residents in El Dorado, Arkansas. The facility operates under the U.S. Clean Water Act, which mandates secondary treatment for municipal wastewater plants of this scale.
El Dorado South WWTP is a municipal wastewater treatment facility located in El Dorado, Union County, Arkansas. Serving a population of around 9,393, the plant is part of the city's wastewater infrastructure, managed under state and federal regulations. As a U.S. facility, the plant operates under the National Pollutant Discharge Elimination System (NPDES) permit program, as required by the Clean Water Act. For a plant serving this population size, secondary treatment is typically required to meet effluent limits for biochemical oxygen demand and total suspended solids. The treated effluent is discharged into local waterways within the Ouachita River basin, which ultimately drains to the Mississippi River and the Gulf of Mexico. The plant plays a role in protecting downstream water quality and aquatic habitats in this ecologically diverse region.
Environmental context
The plant discharges into the Ouachita River basin, a tributary of the Mississippi River that flows into the Gulf of Mexico. This watershed supports diverse aquatic life, including fish and macroinvertebrates, and is an important migratory corridor for birds. The region's forested landscape and seasonal rainfall influence runoff and water quality, making effective wastewater treatment essential for maintaining ecological balance.
Frequently asked questions
El Dorado South WWTP is located in El Dorado, Union County, Arkansas, United States, near Quail Crossing.
The plant serves approximately 9,393 residents in the El Dorado area.
The treated effluent is discharged into local waterways within the Ouachita River basin, which flows to the Mississippi River and the Gulf of Mexico.
As a U.S. facility, the plant operates under the Clean Water Act and is required to have an NPDES permit issued by the Arkansas Department of Energy and Environment or the EPA.
For a plant of this size, secondary treatment is standard, which includes biological processes to reduce organic matter and suspended solids before discharge.
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