Birmingham STL Wastewater Treatment Plant, Birmingham, Iowa

Birmingham STL is a municipal wastewater treatment plant located in Birmingham, Van Buren County, Iowa. The facility serves a small population of 448 residents, reflecting its role in a rural community. 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 NPDES permits for all wastewater discharges. For small communities like Birmingham, secondary treatment is the standard requirement, ensuring compliance with federal water quality standards. The plant's designed capacity is 185.48 megaliters, and it currently treats 151.42 megaliters annually, indicating operational headroom. The treated effluent is discharged into a local waterway that ultimately drains into the Mississippi River basin. This watershed supports diverse aquatic life and provides drinking water for downstream communities. The plant's performance is critical for maintaining water quality in the region's streams and rivers.

The plant discharges into a tributary of the Mississippi River basin, which flows into the Gulf of Mexico. This watershed supports a variety of fish and wildlife, including migratory birds. The secondary treatment process helps reduce nutrient loading, which is important for preventing eutrophication in downstream waters.