DECATUR CITY WWTP - Secondary Treatment Plant in Decatur County, Iowa

DECATUR CITY WWTP is a municipal wastewater treatment facility located in Decatur County, Iowa, United States. The plant serves a small population of 177 residents, reflecting its role in a rural community. The facility is situated on Vine Street and operates under the regulatory framework of the U.S. Clean Water Act. The plant provides secondary treatment, which is the standard level required for most municipal wastewater in the United States. With a designed capacity of 75.71 units, the facility manages the wastewater generated by the local population. As a small-scale plant, it is subject to state-level permitting under the National Pollutant Discharge Elimination System (NPDES), which sets effluent limits to protect water quality. The treated effluent from DECATUR CITY WWTP is discharged into a local water body, likely a stream or river within the Mississippi River basin. The plant's operations help protect downstream ecosystems, including the Mississippi River and the Gulf of Mexico, by reducing nutrient and pollutant loads. The facility plays a key role in maintaining water quality in the region.

The plant discharges into a local water body that drains into the Mississippi River basin, ultimately reaching the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for birds. The plant's secondary treatment helps reduce nutrient pollution, which is critical for mitigating hypoxia in the Gulf.