MELROSE WWTP - Monroe County, Iowa Wastewater Treatment Plant

MELROSE WWTP is a municipal wastewater treatment facility located on 225th Street in Monroe County, Iowa, United States. The plant serves a small community of approximately 150 people, reflecting its role in rural wastewater management within the state. The plant provides secondary treatment, which is the standard level required by the US Clean Water Act for most municipal facilities. With a designed capacity of 56.78 volume units and a discharge volume matching that figure, the plant operates at full capacity. As a small facility, it is subject to EPA NPDES permitting through the Iowa Department of Natural Resources, ensuring compliance with effluent limits. The treated effluent from MELROSE WWTP is discharged into local waterways that ultimately drain into the Mississippi River basin. The plant's inland location, far from coastal areas, reduces direct marine impact. Its operation helps protect local streams and groundwater quality in the agricultural region of southern Iowa.

The plant discharges into small streams within the Des Moines River watershed, which flows southeast to the Mississippi River. This region supports diverse aquatic life and is part of the larger Mississippi River basin, an important migratory corridor for birds and fish. The plant's secondary treatment helps reduce nutrient loading and protects downstream water quality.