A great deal more attention is being paid to polyfluoroalkylated substances (PFAS) in City drinking water after it was revealed In 2017, testing on Lees Creek showed the waterway is polluted with PFAS from the airbase base located just upstream. "North Bay has undertaken a study to evaluate options for enhancing its water treatment process to meet potential future regulatory changes related to per- and polyfluoroalkylated substances (PFAS)," says a news release from the City today.