Duckett Creek STP 1 Wastewater Treatment Plant, Harvester, Missouri

Duckett Creek STP 1 is a municipal wastewater treatment plant located on Greens Bottom Road in Harvester, Saint Charles County, Missouri. It serves a population of about 44,851, placing it in the medium agglomeration category for the region. As a U.S. facility, the plant operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Missouri Department of Natural Resources. These permits set effluent limits to protect water quality. The plant's treated effluent likely discharges into a tributary of the Missouri River, which flows into the Mississippi River and ultimately the Gulf of Mexico. This watershed supports diverse aquatic life and is an important migratory corridor for fish and birds. The plant's operations help maintain water quality in this ecologically significant river system.

The plant's discharge enters the Missouri River watershed, a major tributary of the Mississippi River. The Missouri River supports diverse aquatic species and provides critical habitat for migratory birds. Downstream, the Mississippi River drains into the Gulf of Mexico, where nutrient loading from upstream sources can contribute to hypoxic zones. The plant's treatment helps mitigate such impacts.