Tansi Sewer Utility District Wastewater Treatment Plant, Lake Tansi, Tennessee

Tansi Sewer Utility District is a wastewater treatment facility located in Lake Tansi, Tennessee, serving a population of approximately 3,020 residents. The plant is situated in Cumberland County within the East Tennessee region and provides advanced treatment to protect public health and the environment. The facility operates with advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 1,135.62 million gallons per day and an actual discharge volume of 30.28 million gallons per day, the plant has ample capacity to serve its community. Under the U.S. Clean Water Act, such facilities must comply with National Pollutant Discharge Elimination System (NPDES) permits issued by the Tennessee Department of Environment and Conservation. The treated effluent is discharged into local streams that ultimately drain into the Tennessee River system, part of the larger Mississippi River basin. This watershed supports diverse aquatic life and provides drinking water for downstream communities. Advanced treatment helps minimize nutrient loading and protects water quality in this ecologically sensitive region.

The plant discharges into tributaries of the Tennessee River, which flows into the Ohio River and then the Mississippi River before reaching the Gulf of Mexico. This watershed supports diverse aquatic ecosystems, including fish and mussel species. Advanced treatment reduces nutrient pollution, helping to prevent algal blooms and maintain water quality in downstream reservoirs and the Gulf.