DENMARK SAN DISTR STP - Advanced Wastewater Treatment in Denmark, Iowa

DENMARK SAN DISTR STP is a municipal wastewater treatment facility located in Denmark, Lee County, Iowa, United States. The plant serves a small population of 400 residents, providing essential sanitation services to this rural community. The plant employs advanced treatment processes, which go beyond secondary treatment to remove nutrients and other pollutants. With a designed capacity of 189.27 cubic meters per day and a discharge volume matching that figure, the facility operates at full capacity. As a US plant, it operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting requirements, ensuring compliance with federal water quality standards. The treated effluent is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant's advanced treatment helps protect downstream water quality in the Mississippi River system, which supports diverse aquatic life and provides drinking water for millions of people. Its inland location reduces direct marine impact.

The plant discharges into local streams that flow into the Mississippi River, one of the largest river systems in North America. The Mississippi River basin supports a wide range of aquatic species and provides critical habitat for migratory birds. Advanced treatment at this facility helps reduce nutrient loading, which is important for mitigating the hypoxic zone in the Gulf of Mexico, where the river terminates.