Milligan WWTP - Secondary Wastewater Treatment in Milligan, Nebraska

Milligan WWTP is a municipal wastewater treatment facility located in Milligan, Nebraska, a small community in Fillmore County. The plant serves a population of 315 and operates as part of the local infrastructure managed by the city. The plant provides secondary treatment, which is the standard level required under the U.S. Clean Water Act for municipal wastewater. With a designed capacity of 151.42 megaliters and an annual discharge volume of 113.56 megaliters, the facility operates well within its capacity. The plant is regulated under the National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Nebraska Department of Environment and Energy. The treated effluent is discharged into a local waterway that is part of the Big Blue River basin, which flows into the Kansas River and ultimately the Missouri River. This watershed supports agricultural and ecological systems in the region, and the plant's secondary treatment helps protect downstream water quality.

The plant discharges into a tributary of the Big Blue River, which flows through Nebraska and Kansas before joining the Kansas River and then the Missouri River. This watershed supports diverse aquatic life and is used for irrigation and recreation. The secondary treatment process reduces organic pollutants and suspended solids, helping to maintain the ecological health of the receiving waters.