Overview
Demopolis WWTP serves approximately 6,700 people in Marengo County, Alabama. The plant discharges treated wastewater into the local watershed, ultimately draining to the Gulf of Mexico.
Demopolis WWTP is a municipal wastewater treatment facility located in Marengo County, Alabama, serving an estimated population of 6,700. The plant is situated near the Tombigbee River, which flows through the region and is part of the larger Mobile River Basin. As a facility in the United States, Demopolis WWTP operates under the Clean Water Act, with National Pollutant Discharge Elimination System (NPDES) permits issued by the Alabama Department of Environmental Management. For a plant serving a population of this size, secondary treatment is typically required to meet federal effluent standards. The treated effluent from Demopolis WWTP is discharged into a receiving water body that ultimately drains into the Tombigbee River, then into the Mobile River, and finally into the Gulf of Mexico. This watershed supports diverse aquatic life and is an important ecological corridor in the southeastern United States.
Environmental context
The plant's discharge enters a tributary of the Tombigbee River, which flows south to join the Alabama River and form the Mobile River. The Mobile River Basin empties into Mobile Bay and the Gulf of Mexico, supporting estuarine habitats and fisheries. The watershed is ecologically sensitive, with wetlands and floodplains that provide critical habitat for migratory birds and aquatic species.
Frequently asked questions
Demopolis WWTP is located at 1200 Gandy Ferry Road in Marengo County, Alabama, United States.
The plant serves approximately 6,700 people in the Marengo County area.
The plant discharges treated effluent into a local water body that flows into the Tombigbee River, part of the Mobile River Basin, which ultimately reaches the Gulf of Mexico.
As a US facility, Demopolis WWTP operates under the Clean Water Act and is regulated by an NPDES permit issued by the Alabama Department of Environmental Management.
For a plant of this size, secondary treatment is typically required under the Clean Water Act to meet effluent limits for biochemical oxygen demand and total suspended solids.
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