Hallsdale Powell Raccoon Valley STP | Advanced Wastewater Treatment in Knoxville, Tennessee

Hallsdale Powell Raccoon Valley STP is a wastewater treatment facility located in Knoxville, Tennessee, serving a population of 1,750. The plant is situated in the eastern part of the state, within the Tennessee River basin, and is operated as part of the region's municipal wastewater infrastructure. The plant employs advanced treatment processes, which go beyond standard secondary treatment to remove additional nutrients and contaminants. With a designed capacity of 567.81 million gallons per year and an actual discharge volume of 211.98 million gallons per year, the facility operates well below its capacity. As a U.S. plant, it is subject to the Clean Water Act and operates under an EPA NPDES permit issued by the Tennessee Department of Environment and Conservation, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Tennessee River, a major tributary of the Ohio River and part of the Mississippi River system. The plant's advanced treatment helps protect downstream aquatic ecosystems, including the diverse fish and mussel populations in the Tennessee River, which is an important ecological corridor in the southeastern United States.

The plant discharges into a tributary of the Tennessee River, which flows into the Ohio River and then the Mississippi River before reaching the Gulf of Mexico. The Tennessee River supports a rich diversity of aquatic life, including numerous species of fish and freshwater mussels, some of which are endemic to the region. The advanced treatment at this facility helps reduce nutrient loading, which is critical for preventing algal blooms and maintaining water quality in the downstream river system.