Moundville Lagoon Wastewater Treatment Plant, Moundville, Alabama

Moundville Lagoon is a municipal wastewater treatment facility located in Moundville, Hale County, Alabama. The plant serves a population of approximately 2,155 residents, providing secondary treatment to domestic wastewater from the community. The plant operates under the U.S. Clean Water Act, which requires secondary treatment for municipal wastewater discharges. With a designed capacity of 1,854.85 units and an average daily discharge of 564.03 units, the facility maintains a utilization rate well below its capacity, indicating adequate headroom for current demand. The treated effluent is discharged into a local waterway that ultimately drains into the Black Warrior River, a major tributary of the Mobile River Basin. This river system supports diverse aquatic life and flows into Mobile Bay, an ecologically important estuary on the Gulf of Mexico.

The plant discharges into a tributary of the Black Warrior River, which flows through west-central Alabama before joining the Tombigbee River to form the Mobile River. The Mobile River Basin empties into Mobile Bay, a large estuary that supports critical habitats for fish, shellfish, and migratory birds. The watershed is influenced by agricultural and forested land uses, and the plant's secondary treatment helps protect downstream water quality.