KIRON WWTP - Kiron, Iowa Wastewater Treatment Plant

KIRON WWTP is a municipal wastewater treatment plant located in Kiron, Otter Creek Township, Crawford County, Iowa. Serving a small population of 279, the facility provides secondary treatment, which is the standard level required for communities of this size under the U.S. Clean Water Act. The plant has a designed capacity of 370.97 volume units and an average discharge volume of 336.90, indicating consistent operation within its capacity. As a small-scale facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Iowa Department of Natural Resources, ensuring compliance with effluent limits. The treated effluent is discharged into local streams that drain into the Missouri River watershed, ultimately reaching the Mississippi River and the Gulf of Mexico. The plant plays a key role in protecting water quality in the region's agricultural landscape, preventing nutrient and pathogen pollution in downstream aquatic habitats.

KIRON WWTP discharges into small tributaries of the Boyer River, which flows into the Missouri River near the Nebraska border. The Missouri River then joins the Mississippi River, draining into the Gulf of Mexico. The surrounding watershed is predominantly agricultural, with row crops and livestock operations. The plant's secondary treatment helps reduce organic matter and suspended solids, protecting aquatic life in the receiving streams from oxygen depletion and sedimentation.