Christmas Mountain SD Wastewater Treatment Plant, Town of Dellona, Wisconsin

Christmas Mountain SD is a wastewater treatment facility located on Coon Bluff Road in the Town of Dellona, Sauk County, Wisconsin. The plant serves a small population of around 1,905 residents, reflecting its role in a rural community within the state's wastewater infrastructure. The facility employs advanced treatment processes, ensuring a high level of pollutant removal before discharge. With a designed capacity of 537.53 units and an actual discharge volume of 215.77 units, the plant operates well within its capacity. As a US facility, it is subject to the Clean Water Act and likely operates under an NPDES permit issued by the Wisconsin Department of Natural Resources, which sets effluent limits to protect water quality. The treated effluent is discharged into a local water body that ultimately drains into the Wisconsin River basin, contributing to the Mississippi River watershed. This downstream connection underscores the plant's role in protecting regional water quality and aquatic ecosystems in the Upper Midwest.

The plant discharges into a receiving water body within the Wisconsin River basin, which flows into the Mississippi River and eventually the Gulf of Mexico. The local watershed supports diverse aquatic life and is part of a larger ecological network that includes important migratory corridors for fish and birds. Advanced treatment helps minimize nutrient loading and protects downstream water quality.