And what prevents soil and surface water contamination from countless units that ultimately wind up in landfills?

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In Washtenaw County and Ann Arbor, Michigan a 1, 4-Dioxane, in groundwater and surface soil contamination from Gelman Science, persists after nearly 20 years of cleanup activities and has now spread in groundwater to an area over three miles long and a mile wide.

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The remaining soil contamination is located several feet below uncontaminated surface soil.

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The UNESCO Chair in The Development of a Sustainable Geoenvironment contributes to stalling and reversing the contamination and degradation of terrestrial systems and their surface and groundwater systems.

UNESCO: Chairs and UNITWIN Networks