Geochemical data, water-level data, and slug test analysis results from till confining units and confined aquifers in glacial deposits near Akeley, Cromwell, Litchfield, and Olivia, Minnesota, 2015-2018
Confined (or buried) aquifers overlain by till confining units are used to supply drinking water to millions of people.  Till confining units are typically conceptualized as having very low potential for transmitting water.  Thus, buried aquifers are thought to be less susceptible to surface contamination, but may …