Groundwater contaminated with PFAS in Marinette, Wisconsin is slated for environmental remediation. Marinette, a small town located in northeastern Wisconsin, is home to the headquarters of the Tyco Fire Products unit of Johnson Controls, Inc. (JCI). According to the Wisconsin DNR, the Marinette PFAS remediation will be the most expensive PFAS cleanup in the state. Some estimates place the cleanup effort at more than $140-million.