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WSB Holds Ribbon-cutting Ceremony for Advanced Oxidation Process Water Treatment Plant

August 23, 2017

The first advanced oxidation plant for drinking water in Minnesota was unveiled at a ribbon-cutting ceremony on August 9 in the City of Saint Anthony Village, Minnesota. After an extraordinarily accelerated timeline, the city’s new water treatment facility will physically break up and eliminate an emerging contaminant in the city’s municipal wells without redirecting to another water supply. 

Historically priding itself on a strong commitment to being a sustainable community, the City of Saint Anthony Village retained WSB in April 2015 to begin to evaluate potential solutions for the groundwater contamination. The contaminant, 1,4-dioxane, was a widely used chemical for many years at the Twin Cities Army Ammunition Plant in Arden Hills. The Minnesota Department of Health alerted the city to an elevated level in one of the city’s wells. After notification, the well was immediately shut down and WSB began feverishly working on feasibility and preliminary design solutions.  

“We’re incredibly proud of being able to provide the City of Saint Anthony Village with a tactical, efficient, cost-effective and sustainable solution to their water treatment needs,” said Todd Hubmer, Vice President of Water Resources at WSB and City of Saint Anthony Village City Engineer. “This 27-month process was one of the most rapid in water treatment history and the collaboration between WSB, city staff, city council, the US Army, Minnesota Department of Health and Pollution Control Agency was incredibly vital to the success of this project.”  

WSB Water/Wastewater Group Manager, Greg Johnson, explained the treatment process, "The water treatment plant uses ultraviolet (UV) light and hydrogen peroxide to remove 1,4-dioxane from the water. When water enters the UV reactor, the hydrogen peroxide absorbs the UV light, producing radicals that break down 1,4-dioxane into nontoxic compounds, of carbon dioxide and water, eliminating the contaminant." 

“Finding a resolution that not only removes the contaminant from the ground, but eradicates it from the environment completely is the type of sustainable innovation the City of Saint Anthony Village hopes to continue to employ,” says Jerry Faust, Mayor, City of Saint Anthony Village.