ALLEN WWTP - Secondary Wastewater Treatment Plant in Allen, Kansas

ALLEN WWTP is a municipal wastewater treatment facility located in Allen, Kansas, serving a small population of 211 residents. The plant operates under the regulatory framework of the United States Clean Water Act, which requires secondary treatment for municipal wastewater discharges to protect water quality. The plant provides secondary treatment, a standard biological process that removes biodegradable organic matter and suspended solids. With a designed capacity of 94.64 volume units and an average discharge volume of 79.49 volume units, the facility operates within its capacity. As a small-scale plant, it is subject to state-level NPDES permitting under EPA oversight. The treated effluent is discharged to a local water body, contributing to the Neosho River basin, which flows through Kansas and ultimately drains into the Arkansas River and then the Mississippi River system. The plant plays a role in protecting downstream aquatic ecosystems and maintaining water quality in the region.

The plant discharges into a local water body within the Neosho River basin, which flows southeast through Kansas into Oklahoma. The Neosho River supports diverse aquatic life and is an important migratory corridor for fish. Downstream, the river joins the Arkansas River, which eventually reaches the Mississippi River and the Gulf of Mexico. The plant's secondary treatment helps reduce nutrient and organic pollution, protecting the ecological health of these waters.