LENA WWTP - Advanced Wastewater Treatment in Lena, Wisconsin

LENA WWTP is a municipal wastewater treatment facility located at 277 East Railroad Street in Lena, Oconto County, Wisconsin. The plant serves a small population of 513 residents, providing advanced treatment to protect public health and the environment. The plant employs advanced treatment processes, which go beyond secondary treatment to remove additional pollutants such as nutrients. With a designed capacity of 473.18 cubic meters per day and a discharge volume of 264.98 cubic meters per day, it operates well within its capacity. As a US facility, it is regulated under the Clean Water Act through an EPA NPDES permit issued by the Wisconsin Department of Natural Resources. The treated effluent is discharged to a local water body that drains into the Green Bay watershed and ultimately into Lake Michigan. This discharge supports the ecological health of the region, including aquatic habitats and recreational waters. The plant's advanced treatment helps minimize nutrient loading and protects downstream water quality.

The plant discharges into a local stream that flows into the Green Bay of Lake Michigan, part of the Great Lakes system. This watershed supports diverse aquatic life, including fish species such as walleye and perch, and is an important recreational and ecological resource. Advanced treatment at LENA WWTP helps reduce phosphorus and nitrogen inputs, mitigating eutrophication risks in the bay.