Chesterton WWTP - Porter, Indiana Wastewater Treatment Plant

Chesterton WWTP is a municipal wastewater treatment facility located on League Lane in Porter, Indiana, serving a population of 12,525. The plant is situated in Porter County, within the Great Lakes region, and plays a key role in managing wastewater for this community. As a US facility, Chesterton WWTP operates under the Clean Water Act and is subject to National Pollutant Discharge Elimination System (NPDES) permits issued by the Indiana Department of Environmental Management. For a plant serving approximately 12,500 people, secondary treatment is the federal minimum standard, though many facilities in the Great Lakes basin implement additional nutrient removal to address phosphorus loading. The plant's treated effluent ultimately drains into the Lake Michigan watershed, a vital freshwater resource that supplies drinking water to millions and supports diverse aquatic ecosystems. The facility's proximity to Lake Michigan (within 50 km) underscores the importance of effective treatment to protect water quality in this sensitive Great Lakes environment.

Chesterton WWTP discharges into the Lake Michigan basin, part of the Great Lakes system, which holds 20% of the world's surface freshwater. The watershed supports critical fish habitats, including lake trout and whitefish spawning areas, and is a major migratory corridor for waterfowl. Nutrient loading from wastewater can contribute to algal blooms, making phosphorus control a priority for plants in this region.