LEBANON STP Wastewater Treatment Plant, Lebanon, Kentucky

LEBANON STP is a municipal wastewater treatment plant located in Lebanon, Marion County, Kentucky. It serves a population of about 11,293 people, classifying it as a medium-sized facility under U.S. regulatory frameworks. The plant is situated inland, away from coastal zones, and its operations are governed by the Clean Water Act through National Pollutant Discharge Elimination System (NPDES) permits issued by the Kentucky Division of Water. As a secondary treatment facility typical for communities of this size, LEBANON STP is expected to meet effluent limits for biochemical oxygen demand and total suspended solids. regulations require secondary treatment for municipal plants serving over 10,000 people. The facility likely incorporates biological treatment and disinfection before discharge. The treated effluent from LEBANON STP is discharged into a nearby waterway, which ultimately flows into the Salt River and then the Ohio River, a major tributary of the Mississippi River. This drainage basin supports diverse aquatic life and provides drinking water for downstream communities. The plant plays a critical role in protecting local water quality and public health in the Green River watershed.

The treated effluent from LEBANON STP enters a local stream that drains into the Salt River, a tributary of the Ohio River. The Ohio River flows into the Mississippi River, which empties into the Gulf of Mexico. This watershed supports diverse aquatic ecosystems, including fish and migratory birds. The plant's discharge must comply with Kentucky water quality standards to protect downstream uses such as recreation and drinking water supply.