Lebanon Regional WWTP and Sewers - South Lebanon, Ohio Wastewater Treatment

Lebanon Regional WWTP and Sewers is a municipal wastewater treatment facility located in South Lebanon, Ohio, within Warren County. The plant serves a population of approximately 22,492 people, classifying it as a medium-sized agglomeration under US regulatory standards. As a US-based facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Ohio Environmental Protection Agency. For a plant of this scale, secondary treatment is typically required, with possible additional nutrient removal depending on the receiving water body's sensitivity. The plant discharges treated effluent into local waterways that ultimately drain into the Ohio River basin. The Ohio River is a major tributary of the Mississippi River, supporting diverse aquatic life and providing drinking water for millions downstream. The plant's performance is critical for maintaining water quality in this ecologically and economically significant watershed.

The plant's treated effluent flows into local streams within the Great Miami River watershed, which drains into the Ohio River. The Ohio River is a major tributary of the Mississippi River, supporting diverse aquatic species and serving as a vital water resource. Downstream ecosystems include floodplain forests and wetlands that provide habitat for migratory birds and fish. Nutrient loading from wastewater can contribute to algal blooms in the Ohio River, making effective treatment important for ecological health.