Colony WWTP - Secondary Wastewater Treatment in Colony, Kansas

Colony WWTP is a municipal wastewater treatment facility located in Colony, Kansas, a small community in Anderson County. The plant serves a population of about 400 people, reflecting its role in managing domestic wastewater for a rural agglomeration. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 170.34 thousand cubic meters per year and an actual discharge volume of 132.49 thousand cubic meters, the facility operates below its capacity. As a US plant, it is subject to the Clean Water Act and operates under an EPA NPDES permit issued by the Kansas Department of Health and Environment, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Neosho River basin, part of the Arkansas River watershed. This system flows through the Great Plains region, supporting agricultural and ecological needs downstream. The plant's operation helps maintain the health of local streams and the broader river ecosystem.

The plant's discharge enters a tributary of the Neosho River, which flows into the Arkansas River and eventually reaches the Mississippi River system. This watershed supports diverse aquatic life and is important for regional agriculture. The secondary treatment ensures that nutrient and organic loads are reduced, protecting downstream water quality in this ecologically sensitive prairie river system.