LANESBORO STL Wastewater Treatment Plant, Lanesboro, Iowa

LANESBORO STL is a municipal wastewater treatment facility located in Lanesboro, a small community in Carroll County, Iowa, United States. The plant serves a population of 152, reflecting its role in managing domestic wastewater for a rural agglomeration. As a secondary treatment plant, it provides biological treatment to reduce organic matter and suspended solids, meeting the standard requirements under the US Clean Water Act. The plant has a designed capacity of 75.71 units and a discharge volume of 75.71 units, indicating full utilization of its capacity. It operates under the National Pollutant Discharge Elimination System (NPDES) permit program, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body, contributing to the North Raccoon River watershed, which flows into the Des Moines River and ultimately the Mississippi River. This inland location supports regional aquatic ecosystems and downstream water quality in the Mississippi River Basin.

The plant discharges into a tributary of the North Raccoon River, part of the Mississippi River Basin. The watershed supports diverse aquatic life and is used for recreation and agriculture. Downstream, the Des Moines River and Mississippi River provide critical habitat for fish and migratory birds. The plant's secondary treatment helps reduce nutrient loading, protecting these water bodies from eutrophication.