MARQUETTE WWTP - McPherson County, Kansas Wastewater Treatment Plant

MARQUETTE WWTP is a municipal wastewater treatment facility located in McPherson County, Kansas, United States. It serves a small community of 542 people, reflecting its role in rural wastewater management within the state. The plant operates with secondary treatment, which is the standard level required under the U.S. Clean Water Act for most municipal facilities. Its designed capacity is 253.62 volume units, and current discharge volume is 204.41, indicating operational headroom. As a U.S. facility, it is subject to National Pollutant Discharge Elimination System (NPDES) permitting, administered by the Kansas Department of Health and Environment. The treated effluent is discharged into local waterways that ultimately drain into the Arkansas River basin, contributing to the Mississippi River watershed. This inland location supports regional water quality and downstream ecosystems, including agricultural and natural habitats in the Great Plains.

The plant discharges into local streams that flow into the Arkansas River, a major tributary of the Mississippi River. This watershed supports diverse aquatic life and provides water for irrigation and recreation. The plant's secondary treatment helps reduce organic pollutants and protect downstream water quality in the Great Plains region.