Wastewater Treatment Plants

Clarifiers, sedimentation basins, and utility buildings at municipal plants in Savage MN, Cottage Grove MN, Marathon City WI, and Killdeer ND

Wastewater treatment plants in Savage, Minnesota, Cottage Grove, Minnesota, Marathon City, Wisconsin, and Killdeer, North Dakota form the core of this set, which documents the working infrastructure of municipal sewage and water treatment across the Upper Midwest. Circular clarifiers, sedimentation basins, catwalks, storage tanks, and low utility buildings show the physical reality of systems that operate around the clock to process residential and commercial waste.

These facilities range from the Blue Lake Wastewater Treatment Plant in Savage — operated by Metropolitan Council Environmental Services and serving communities across the Minneapolis–Saint Paul metropolitan area including Shakopee — to small-town operations such as the Killdeer Waterworks in Killdeer, North Dakota, which handles treatment, pumping, and distribution for a single municipality. Coverage includes both aerial perspectives and ground-level detail, with the Marathon City plant in Wisconsin shown during overnight operations, when the treatment basins and service buildings are fully illuminated. Together the facilities illustrate how communities of vastly different scales rely on the same fundamental treatment processes — primary settling, secondary treatment, and permitted discharge — to protect downstream water quality and public health.

Waste Water Treatment Plant in Cottage Grove 2019
September 8, 2019 — Wastewater treatment facilities in Cottage Grove, Minnesota, with clarifier basins, catwalks, and control structures used in the municipal sewage-treatment process. Such plants are part of local public works systems that remove solids and contaminants from wastewater before treated effluent is discharged. The visible circular tanks and connecting walkways are typical components of modern treatment operations designed for continuous monitoring and maintenance.
Cottage Grove Wastewater Treatment Plant
September 8, 2019 — Sedimentation basins at the Cottage Grove Wastewater Treatment Plant in Cottage Grove, Minnesota, are equipped with rotating collector mechanisms that remove settled solids during primary treatment. Elevated metal walkways and railings provide access to pumps, valves, and mechanical equipment used to operate and maintain the tanks. The facility is part of the municipal wastewater system that treats sewage before discharge, with additional treatment structures and service areas visible beyond the basins.
The Killdeer Waterworks facility in Killdeer, North Dakota, is a brick building that houses essential systems for treating and distributing potable water to the community.
July 5, 2018 — Killdeer Waterworks in Killdeer, North Dakota, is the municipal water treatment and distribution facility for the city. The low brick utility building houses equipment used to process and deliver potable water to local homes, businesses, and public services. Facilities of this type form the core of small-town water systems, handling treatment, pumping, storage, and distribution as part of everyday public utility operations.
The Marathon City Wastewater Treatment Plant in Marathon City, Wisconsin, is illuminated at night. This facility is vital for treating community wastewater and protecting public health and the environment.
July 14, 2017 — Marathon City Wastewater Treatment Plant in Marathon City, Wisconsin, with treatment basins, service buildings, and a large storage tank illuminated during overnight operations. The municipal facility processes the village’s wastewater through a series of treatment stages designed to remove solids, organic matter, and other pollutants before treated effluent is released under state and federal permit requirements. Plants of this type operate continuously to manage residential and commercial sewage and to protect downstream water quality.
Aerial view of the Blue Lake Wastewater Treatment Plant in Savage, Minnesota, showing circular clarifiers used for processing wastewater from the Minneapolis-Saint Paul metropolitan area.
May 18, 2016 — Blue Lake Wastewater Treatment Plant in Savage, Minnesota, is shown from above with a series of circular clarifiers used in the treatment process. Operated by the Metropolitan Council Environmental Services, the facility handles sewage from communities in the Minneapolis-Saint Paul metropolitan area, including Shakopee. These settling basins are part of the plant’s primary and secondary treatment system, where solids are separated from wastewater before further processing and discharge.

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