The Gelman Dioxane Plume Added to Superfund National Priorities List
Following years of efforts, the Gelman dioxane plume beneath Ann Arbor has been officially included in the Superfund National Priorities List. The plume, containing 1,4-dioxane contamination, originated from industrial activities by Gelman Sciences LLC in Scio Township, west of Ann Arbor.
Congresswoman Debbie Dingell emphasized the importance of this designation, stating, “While this designation is an important step forward, our work is far from finished. I will continue working with the EPA, state, and local partners to ensure the cleanup is transparent, drinking water is safe, and public health is protected.”
Impacts on Drinking Water and Health Concerns
Ann Arbor Water, responsible for managing the city’s drinking water, has been closely monitoring the plume. There are concerns that the plume’s movement could affect the city’s water system. Over 120 residential drinking water wells contaminated by the plume have been addressed by paving over and connecting residents to municipal water.
Research on the effects of 1,4-dioxane on human health is limited, but studies on animals have shown potential harm, such as liver and kidney damage. Despite a court order dating back to 1992 mandating cleanup, the three-square-mile plume persists, prompting the state to request Superfund site designation in 2021.
Continued Efforts and Future Plans
With the Superfund designation, federal funding and long-term planning for cleanup efforts will be available. This will also facilitate coordinated technical assistance with state and local agencies. Michigan Department of Environment, Great Lakes and Energy Director Phil Roos expressed optimism, stating, “Strong advocacy and partnership have brought us to this point, and we look forward to continuing our work with the community and the EPA to ensure residents are protected.”
This story will be updated as new developments arise.
