(May 16, 2019, 1:59 PM EDT) -- WILMINGTON, Del. — A putative class of residents on May 14 filed a lawsuit in Delaware federal court contending that the 3M Co. and others are liable for contaminating their groundwater with per- and polyfluorocarbons (Susan Henry v. Wolverine World Wide Inc., et al., No. 18-01924-MN, D. Del.)....