Martensdale WWTP - Secondary Wastewater Treatment in Martensdale, Iowa

Martensdale WWTP is a municipal wastewater treatment facility located in Martensdale, Iowa, United States. The plant serves a small population of 467 residents in this rural community within Warren County. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 302.83 units and an average discharge volume of 227.13 units, the facility operates below its capacity, indicating room for future growth. As a U.S. plant, it operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Iowa Department of Natural Resources, ensuring compliance with federal water quality standards. The treated effluent from Martensdale WWTP is discharged into a local waterway that ultimately drains into the Mississippi River basin. This connection to the larger watershed underscores the plant's role in protecting downstream water quality and aquatic ecosystems in the region.

The plant discharges into a tributary of the Middle River, which flows into the Des Moines River and eventually the Mississippi River. This watershed supports diverse aquatic life and provides habitat for fish species such as channel catfish and walleye. The plant's secondary treatment helps reduce nutrient and organic pollutant loads, protecting downstream water quality in this agriculturally intensive region.