Liberty SD 1 STP - Secondary Wastewater Treatment in Town of Liberty, Wisconsin

Liberty SD 1 STP is a municipal wastewater treatment plant located in the Town of Liberty, Manitowoc County, Wisconsin. The plant serves a small population of 355 residents and operates under secondary treatment standards, which is typical for small communities in the United States. The plant has a designed capacity of 113.56 megaliters per year and currently discharges 75.71 megaliters per year of treated effluent. As a secondary treatment facility, it meets the minimum requirements under the US Clean Water Act for removing organic matter and suspended solids. The plant's proximity to Lake Michigan places it under additional scrutiny for nutrient management to prevent eutrophication. The treated wastewater is discharged into the Lake Michigan basin, which is part of the Great Lakes system. Lake Michigan supports diverse aquatic life and provides drinking water for millions. The plant's coastal location requires careful operation to protect the lake's water quality and ecosystem health.

The plant discharges into the Lake Michigan watershed, which drains into the Great Lakes system and ultimately to the Atlantic Ocean via the St. Lawrence River. Lake Michigan is a large freshwater lake that supports diverse aquatic life, including fish species such as lake trout and whitefish. The coastal location means that treated effluent must meet strict standards to prevent nutrient loading and protect the lake's ecological balance.