DEEP RIVER STL Wastewater Treatment Plant, Deep River, Iowa

DEEP RIVER STL is a municipal wastewater treatment plant located in Deep River, Iowa, United States. It serves a small community of 345 residents in Poweshiek County. The plant operates under the regulatory framework of the US Clean Water Act, which requires secondary treatment for municipal discharges. The plant has a designed capacity of 151.42 cubic meters per day and treats an equal volume of wastewater. As a secondary treatment facility, it provides biological treatment to reduce organic matter and suspended solids. The plant's discharge volume is consistent with its capacity, indicating stable operations. The treated effluent is discharged into local waterways that drain into the Iowa River basin, ultimately reaching the Mississippi River. The plant plays a key role in protecting downstream water quality in this agricultural region, supporting aquatic life and recreational uses.

The plant discharges into tributaries of the Iowa River, which flows into the Mississippi River. The local watershed is predominantly agricultural, with runoff from croplands contributing nutrient loads. The plant's secondary treatment helps reduce organic pollutants and nutrients, mitigating eutrophication risks in downstream water bodies. The Mississippi River system supports diverse aquatic ecosystems and is a critical migratory corridor for fish and birds.