Monticello WWTP | Wastewater Treatment Plant in Monticello, Iowa

Monticello WWTP is a municipal wastewater treatment facility located in Monticello, Jones County, Iowa. The plant serves a population of about 3,607 people, classifying it as a small to medium-sized treatment works under U.S. regulatory frameworks. It is situated near the Maquoketa River, which is part of the Upper Mississippi River Basin. As a U.S. facility, Monticello WWTP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permitting. For plants serving populations around 3,600, secondary treatment is typically required, and the facility likely employs conventional activated sludge or similar biological processes. The Iowa Department of Natural Resources (DNR) oversees compliance with state water quality standards. The plant's treated effluent discharges into the Maquoketa River, which flows southeast to the Mississippi River near Dubuque. This waterway supports diverse aquatic life and is used for recreation and fishing. Proper treatment is essential to protect downstream water quality and the ecological health of the Mississippi River system.

Monticello WWTP discharges into the Maquoketa River, a tributary of the Upper Mississippi River. The Maquoketa River supports a variety of fish and macroinvertebrate species and is an important recreational resource for the region. Downstream, the Mississippi River provides critical habitat for migratory birds and aquatic species. The plant's operations help maintain water quality in this ecologically significant watershed.