Monticello WWTP - Secondary Wastewater Treatment in Monticello, Wisconsin

Monticello WWTP is a municipal wastewater treatment facility located in Monticello, Green County, Wisconsin. Serving a population of about 1,477, the plant is part of the town's essential infrastructure for managing domestic wastewater. The facility operates under the regulatory framework of the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges. The plant provides secondary treatment, which typically involves biological processes to remove organic matter and suspended solids. With a designed capacity of 1,128.05 million gallons per day and an average discharge volume of 605.67 million gallons per day, the facility operates well within its capacity. This level of treatment meets the standard requirements for inland plants of this size. The treated effluent is discharged into a local receiving water body, likely a stream or river within the Sugar River watershed, which ultimately drains into the Pecatonica River and then the Rock River system. This waterway supports diverse aquatic life and is important for regional water quality. The plant's operations help protect downstream ecosystems and maintain the health of the watershed.

The plant discharges into a local water body within the Sugar River watershed, which flows into the Pecatonica River and eventually the Rock River system. This watershed supports diverse aquatic habitats and is used for recreation and agriculture. The plant's secondary treatment helps reduce nutrient and organic loads, protecting downstream water quality and aquatic life.