Millington STP 2 Wastewater Treatment Plant, Millington, Tennessee

Millington STP 2 is a municipal wastewater treatment plant located on Old Millington Road in Millington, Tennessee, within Shelby County. The facility serves a population of about 12,500 people, classifying it as a medium-sized agglomeration under U.S. regulatory standards. As a U.S. wastewater facility, Millington STP 2 operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Tennessee Department of Environment and Conservation. For plants serving populations of this scale, secondary treatment is typically required to reduce organic matter and suspended solids before discharge. The plant's treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The Mississippi River system supports diverse aquatic life and provides drinking water for millions downstream. Proper treatment at facilities like Millington STP 2 is essential for maintaining water quality in this major watershed.

The plant discharges into tributaries of the Mississippi River, which flows into the Gulf of Mexico. The Mississippi River basin is one of the largest watersheds in North America, supporting extensive aquatic ecosystems and providing critical habitat for fish and migratory birds. Nutrient loading from wastewater discharges can contribute to hypoxic zones in the Gulf, making effective treatment important for downstream environmental health.