COLWICH WWTP - Secondary Wastewater Treatment in Sedgwick County, Kansas

COLWICH WWTP is a municipal wastewater treatment facility located in Sedgwick County, Kansas, United States. The plant serves a small population of 1,364 residents and operates under secondary treatment standards, which is the minimum required by the US Clean Water Act for domestic wastewater. The plant has a designed capacity of 707.87 units and currently processes an average daily flow of 465.61 units. As a secondary treatment facility, it uses biological processes to remove organic matter and suspended solids, meeting typical effluent quality standards for inland discharge. The plant is not located near coastal areas, reducing direct marine impact. The treated effluent from COLWICH WWTP is discharged into local waterways that ultimately drain into the Arkansas River basin, a major tributary of the Mississippi River system. This contributes to the overall water quality management in the region, supporting downstream aquatic ecosystems and agricultural water uses.

The plant discharges into the Arkansas River basin, which flows through Kansas and Oklahoma before joining the Mississippi River. The watershed supports diverse aquatic life and provides water for irrigation and municipal use. Downstream, the river contributes to the Mississippi River system, which drains into the Gulf of Mexico, an ecologically sensitive area affected by nutrient loading.