RILEY WWTP - Secondary Wastewater Treatment in Riley County, Kansas

RILEY WWTP is a municipal wastewater treatment facility located in Riley County, Kansas, United States. The plant serves a small population of 544 residents, reflecting its role in a rural or small community setting within the state's wastewater infrastructure. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 454.25 volume units and an average daily discharge of 204.41, the facility operates well within its capacity. As a US plant, it is subject to the Clean Water Act and National Pollutant Discharge Elimination System (NPDES) permitting, which sets effluent limits to protect water quality. The treated effluent is discharged into local waterways that ultimately drain into the Kansas River basin, part of the larger Mississippi River watershed. The plant's operations help maintain the ecological health of these receiving waters, supporting aquatic life and downstream uses.

The plant discharges into local streams that flow into the Kansas River, a major tributary of the Missouri River, which eventually joins the Mississippi River. This watershed supports diverse aquatic habitats and is important for regional biodiversity. The secondary treatment process reduces pollutants, protecting downstream ecosystems from nutrient enrichment and organic pollution.