Markesan WWTP - Municipal Wastewater Treatment in Markesan, Wisconsin

Markesan WWTP is a municipal wastewater treatment facility located at 504 West Manchester Street in Markesan, Wisconsin. The plant serves a population of about 2,191 people in this small community within Green Lake County. As a publicly owned treatment works, it is part of the regional wastewater infrastructure serving south-central Wisconsin. The plant operates under the U.S. Clean Water Act framework, which requires secondary treatment for municipal facilities of this scale. The designed capacity is 1.00 million gallons per day, indicating the plant is sized to handle the community's wastewater flows. Wisconsin Department of Natural Resources oversees compliance with state and federal discharge standards. The plant's treated effluent ultimately drains into the Upper Fox River watershed, which flows through central Wisconsin and into Lake Winnebago, the state's largest inland lake. From there, water continues via the Fox River to Green Bay and Lake Michigan. This watershed supports diverse aquatic life and provides recreational and ecological value to the region.

Markesan WWTP discharges into the Upper Fox River basin, which flows into Lake Winnebago and eventually through the Fox River to Green Bay and Lake Michigan. The receiving waters support a variety of fish species and aquatic habitats. The watershed is part of the larger Lake Michigan drainage, which is ecologically sensitive due to its role in the Great Lakes ecosystem. Proper treatment helps protect water quality in this interconnected system.