DUNKERTON WWTP - Secondary Treatment Plant in Dunkerton, Iowa

DUNKERTON WWTP is a municipal wastewater treatment facility located on North Canfield Street in Dunkerton, Black Hawk County, Iowa. The plant serves a small population of 746 residents, reflecting the rural character of the community. It operates under the regulatory framework of the U.S. Clean Water Act, administered by the Iowa Department of Natural Resources, which issues National Pollutant Discharge Elimination System (NPDES) permits for facilities of this scale. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. It has a designed capacity of 378.54 thousand cubic meters per year and treats an annual discharge volume of 227.13 thousand cubic meters. The facility's capacity utilization indicates it operates well within its design limits, ensuring reliable treatment for the community. The treated effluent is discharged into a local water body that ultimately drains into the Cedar River, a tributary of the Iowa River, which flows to the Mississippi River. This watershed supports diverse aquatic life and provides water for agricultural and recreational uses downstream. The plant's operation helps protect water quality in this important Midwestern river system.

The plant's discharge enters a local stream that flows into the Cedar River, part of the Mississippi River basin. This watershed supports diverse aquatic species and is used for recreation and agriculture. The plant's secondary treatment helps reduce nutrient and organic loads, protecting downstream water quality in the Cedar and Iowa rivers.