Offerle WWTP - Edwards County, Kansas Wastewater Treatment Plant

Offerle WWTP is a municipal wastewater treatment facility located in Edwards County, Kansas, United States. It serves a small population of approximately 204 residents, reflecting the rural character of the area. The plant is situated in the central Great Plains region, where agriculture is the dominant land use. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal facilities. Secondary treatment typically involves biological processes to remove organic matter and suspended solids. The plant has a designed capacity of 128.70 units, and current discharge volume is 83.28 units, indicating it operates below its design capacity. The treated effluent is discharged into local waterways that ultimately drain into the Arkansas River basin, part of the Mississippi River watershed. This region supports agricultural irrigation and provides habitat for prairie aquatic species. The plant's operation helps protect downstream water quality in this sensitive semi-arid environment.

The plant discharges into tributaries of the Arkansas River, which flows through Kansas and Oklahoma before joining the Mississippi River. The local watershed supports agricultural irrigation and provides habitat for native fish and migratory birds. Protecting water quality is essential for maintaining the ecological health of the prairie stream system.