DENISON WWTP - Denison, Iowa Wastewater Treatment Plant

DENISON WWTP is a municipal wastewater treatment facility located in Denison, Iowa, serving a population of about 6,600. Situated along Boyer Valley Road in Crawford County, the plant is part of the region's essential water infrastructure, managing wastewater from the community and local industries. As a US facility, DENISON WWTP operates under the Clean Water Act, which requires secondary treatment for municipal wastewater. The National Pollutant Discharge Elimination System (NPDES) permit program governs its discharge, ensuring compliance with federal and state water quality standards. For a plant of this scale, typical treatment includes biological processes to reduce organic matter and suspended solids. The plant's treated effluent is discharged into the Boyer River, a tributary of the Missouri River. This waterway supports diverse aquatic life and is used for recreation and agriculture downstream. Proper treatment helps protect water quality in the Missouri River basin, which ultimately drains into the Mississippi River and the Gulf of Mexico.

DENISON WWTP discharges into the Boyer River, which flows into the Missouri River near the Nebraska border. The Missouri River is a major tributary of the Mississippi River, draining a vast agricultural region. The local watershed supports fish species such as channel catfish and walleye, and the river is an important corridor for migratory birds. Protecting water quality here helps maintain ecological balance in the larger Mississippi River basin.