City Club of Chicago will host an event Tuesday at 12 p.m. with Alaina Harkness, executive director of current and CEO and principal investigator of Great Lakes ReNEW and Junhong Chen, Crown Family professor of molecular engineering in the UChicago Pritzker School of Molecular Engineering and lead water strategist at Argonne National Laboratory. The two will hold a discussion moderated by the Chicago Tribune's Michael Hawthorne titled "Water Innovation: Turning Waste into Health and Wealth."