Huntingdon Barnett St Lagoon Wastewater Treatment Plant, Tennessee

Huntingdon Barnett St Lagoon is a municipal wastewater treatment facility located in Huntingdon, Carroll County, Tennessee. The plant serves a population of approximately 1,327 residents, classifying it as a small-scale treatment facility within the state's wastewater infrastructure. The plant provides secondary treatment, which is the standard level required by the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 1,135.62 thousand cubic meters per year and an annual discharge volume of 507.25 thousand cubic meters, the facility operates well within its capacity. Under the National Pollutant Discharge Elimination System (NPDES), plants of this scale are typically permitted by the Tennessee Department of Environment and Conservation. The treated effluent is discharged into local waterways that ultimately drain into the Tennessee River basin. The plant plays a role in protecting the water quality of the region's streams and rivers, which support diverse aquatic life and provide recreational and drinking water resources downstream.

The plant discharges into local streams that are part of the Tennessee River watershed, which flows into the Ohio River and then the Mississippi River before reaching the Gulf of Mexico. This region supports a variety of freshwater species and is important for migratory fish. The secondary treatment process helps reduce organic pollutants and suspended solids, protecting the ecological health of the receiving waters.