BU CO SD 9 WWTP ROSALIA - Secondary Wastewater Treatment in Rosalia, Kansas

BU CO SD 9 WWTP ROSALIA is a municipal wastewater treatment facility located in Rosalia, Kansas, within Butler County. The plant serves a small population of 275 people, reflecting its role in a rural community. It operates under the regulatory framework of the United States Clean Water Act, which governs wastewater discharges through the National Pollutant Discharge Elimination System (NPDES) permit program. The plant provides secondary treatment, a standard level that removes biodegradable organic matter and suspended solids. Its designed capacity is 102.21 volume units, with a corresponding discharge volume, indicating it operates at full capacity. As a small facility, it is subject to state-level oversight by the Kansas Department of Health and Environment, which issues permits ensuring compliance with water quality standards. The treated effluent is discharged into local streams that drain into the Verdigris River basin, ultimately contributing to the Arkansas River system. This watershed supports agricultural and ecological functions in the Great Plains region. The plant's operation helps protect downstream water quality and aquatic habitats from untreated sewage impacts.

The plant discharges into small streams within the Verdigris River watershed, which flows into the Arkansas River and eventually the Mississippi River system. This basin supports diverse aquatic life and is used for irrigation and recreation. The plant's secondary treatment reduces organic pollutants, helping maintain the ecological health of these waterways in a region dominated by agriculture and rural land use.