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In page Lake Elmo, Minnesota:

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The primary source area for the Baytown Township Groundwater Plume Contamination Superfund site is a property at 11325 Stillwater Boulevard in Lake Elmo. A metal-working facility used the property from 1940 to 1968. It is a Superfund site due to TCE contamination of a groundwater aquifer used for local drinking water.[citation needed]