Humansville WWTP - Secondary Treatment Plant in Polk County, Missouri

Humansville WWTP is a municipal wastewater treatment facility located in Polk County, Missouri, United States. The plant serves a small community of approximately 1,048 residents, providing essential sanitation services for the area. The plant operates with secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal facilities of this scale. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 605.66 volume units and discharges an average of 408.82 volume units, indicating it operates below its maximum capacity. The treated effluent from Humansville WWTP is discharged into local streams that flow into the Osage River basin, part of the larger Missouri River watershed. This region supports diverse aquatic life and is important for downstream water quality in the Mississippi River system. The plant's operation helps protect local water resources from untreated sewage contamination.

The plant discharges into tributaries of the Osage River, which flows into the Missouri River and ultimately the Mississippi River. The local watershed supports a mix of agricultural and natural habitats, and the plant's secondary treatment helps reduce nutrient and pathogen loads, protecting downstream aquatic ecosystems and recreational uses.