Overview
Portage WWTP serves approximately 10,337 residents in Portage, Wisconsin. The facility operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local water quality.
Portage WWTP is a municipal wastewater treatment facility located in Portage, Columbia County, Wisconsin. Serving a population of about 10,337, the plant is part of the city's essential infrastructure for managing domestic wastewater. The facility is situated inland, more than 50 kilometers from the Great Lakes coast, and its operations are subject to state and federal regulations. Under the U.S. Clean Water Act, wastewater treatment plants of this scale are typically required to provide secondary treatment as a minimum. The National Pollutant Discharge Elimination System (NPDES) permit program, administered by the Wisconsin Department of Natural Resources, sets effluent limits to protect receiving waters. The plant's design and operation must comply with these standards to ensure environmental protection. The plant discharges treated effluent into a local water body that ultimately drains into the Wisconsin River basin. This river system flows into the Mississippi River, which empties into the Gulf of Mexico. The plant's performance is critical for maintaining water quality in the Wisconsin River and downstream ecosystems, including the Mississippi River and the Gulf of Mexico's hypoxic zone.
Environmental context
The plant's treated effluent enters a tributary of the Wisconsin River, which flows southwest to join the Mississippi River near Prairie du Chien. The Mississippi River then drains into the Gulf of Mexico, a large marine ecosystem that experiences seasonal hypoxia due to nutrient loading from upstream sources. Portage WWTP's nutrient removal performance is therefore relevant to downstream water quality, including the health of the Gulf's fisheries and marine habitats.
Frequently asked questions
Portage WWTP is located on East Wisconsin Street in Portage, Columbia County, Wisconsin, United States.
The plant serves approximately 10,337 residents in the city of Portage and surrounding areas.
The plant discharges treated effluent into a local water body that is part of the Wisconsin River basin, which ultimately flows into the Mississippi River and the Gulf of Mexico.
Portage WWTP operates under the U.S. Clean Water Act, with NPDES permits issued by the Wisconsin Department of Natural Resources. These permits set effluent limits to protect water quality.
Plants of this scale in the U.S. are typically required to provide secondary treatment, which includes biological processes to remove organic matter and suspended solids. Some may also incorporate nutrient removal to meet local water quality standards.
Nearby plants