West Warren_Viola STP - Morrison, Tennessee Wastewater Treatment Plant

West Warren_Viola STP is a wastewater treatment plant located in Morrison, Tennessee, within Warren County. It serves a small population of approximately 1,000 residents, providing secondary treatment to municipal wastewater. The plant is part of the local infrastructure managed under the U.S. Clean Water Act, which sets standards for effluent quality through National Pollutant Discharge Elimination System (NPDES) permits. The plant has a designed capacity of 3,406.86 cubic meters per day and currently discharges an average volume of 730.58 cubic meters per day, indicating it operates well below its capacity. Secondary treatment typically involves biological processes to reduce organic matter and suspended solids, meeting federal and state requirements for discharge into surface waters. The treated effluent is released into nearby streams that drain into the Tennessee River basin, ultimately flowing to the Mississippi River and the Gulf of Mexico. The plant plays a key role in protecting local water quality in the Middle Tennessee region, which features diverse aquatic habitats and supports recreational and ecological uses.

The plant discharges into local tributaries of the Tennessee River, which flows through the southeastern United States before joining the Ohio River and then the Mississippi River to the Gulf of Mexico. The watershed supports diverse aquatic life, including fish and macroinvertebrates, and is used for recreation and water supply. The plant's secondary treatment helps reduce nutrient loading and organic pollution, protecting downstream ecosystems.