Unionville WWTP - Secondary Treatment Plant in Unionville, Iowa

Unionville WWTP is a municipal wastewater treatment facility located in Unionville, Appanoose County, Iowa. It serves a small population of 133 residents, reflecting the rural character of the area. The plant is situated on Union Street and provides essential sanitation services to the community. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for municipal wastewater. Its designed capacity is 41.64 thousand cubic meters per year, matching the current discharge volume, indicating full utilization. As a small facility, it is subject to state-level NPDES permitting under the authority of the Iowa Department of Natural Resources. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant plays a key role in protecting downstream water quality in the region, supporting aquatic life and recreational uses in the receiving waters.

The plant discharges into a local stream that is part of the Mississippi River watershed. The receiving water body supports diverse aquatic life and is used for recreation and agriculture. Downstream, the water flows into the Mississippi River, which is a major ecological and economic corridor. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, protecting water quality in this sensitive basin.