Belle Plaine WWTP - Secondary Wastewater Treatment in Belle Plaine, Kansas

Belle Plaine WWTP is a municipal wastewater treatment plant located in Belle Plaine, Sumner County, Kansas, United States. The facility serves a population of approximately 1,829 residents, reflecting a small community scale typical of rural Kansas towns. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 946.35 m³/day and an average discharge volume of 567.81 m³/day, the plant operates below its capacity, indicating room for future growth. As a U.S. facility, it operates under a National Pollutant Discharge Elimination System (NPDES) permit issued by the Kansas Department of Health and Environment, ensuring compliance with federal water quality standards. The treated effluent is discharged into a local waterway that ultimately drains into the Arkansas River basin, which flows through Kansas and Oklahoma before reaching the Mississippi River. The plant plays a key role in protecting downstream water quality in the Arkansas River watershed, supporting aquatic life and recreational uses.

Belle Plaine WWTP discharges into a tributary of the Arkansas River, which flows through the Great Plains region. The Arkansas River is a major waterway that supports diverse aquatic habitats and provides water for irrigation and municipal use. Downstream, the river joins the Mississippi River, contributing to the larger Gulf of Mexico watershed. The plant's secondary treatment helps reduce nutrient and organic loads, protecting the ecological health of the Arkansas River basin.