Mendon WWTP - Secondary Treatment Plant in Mendon, Missouri

Mendon WWTP is a municipal wastewater treatment plant located in Mendon, Chariton County, Missouri. Serving a small population of 171, the facility provides secondary treatment, which is the standard level for communities of this size in the United States under the Clean Water Act. The plant has a designed capacity of 124.92 million gallons per day and treats an average daily flow of 94.64 million gallons, indicating efficient operation. As a secondary treatment plant, it uses biological processes to remove organic matter and suspended solids before discharge. The treated effluent is released into local streams that drain into the Missouri River watershed, ultimately reaching the Mississippi River. This discharge supports downstream aquatic ecosystems and helps maintain water quality in the region's agricultural landscape.

The plant discharges into local waterways within the Missouri River basin, which flows into the Mississippi River and eventually the Gulf of Mexico. The surrounding area is primarily agricultural, and the plant's secondary treatment helps reduce nutrient loads that could contribute to downstream algal blooms and hypoxia in the Gulf.