LYNNVILLE STL Wastewater Treatment Plant, Lynnville, Iowa

LYNNVILLE STL is a municipal wastewater treatment facility located in Lynnville, Jasper County, Iowa, United States. The plant serves a small community of approximately 393 residents, reflecting its role in managing local domestic wastewater. As a secondary treatment plant, it provides biological treatment to reduce organic pollutants and suspended solids before discharge. The plant operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all wastewater discharges. For small communities like Lynnville, secondary treatment is the standard requirement to protect water quality. The plant has a designed capacity of 151.42 cubic meters per day and a current discharge volume of 113.56 cubic meters per day, indicating it operates below capacity. The treated effluent is discharged into a local water body that eventually drains into the Mississippi River basin. This watershed supports diverse aquatic life and provides drinking water for downstream communities. Proper treatment at this plant helps maintain the ecological health of the region's streams and rivers.

The plant discharges into a local stream that flows into the South Skunk River, a tributary of the Mississippi River. The Mississippi River basin is a major ecological corridor supporting numerous fish species, migratory birds, and aquatic plants. Effective wastewater treatment at Lynnville STL helps prevent nutrient pollution and protects downstream water quality in this important watershed.