“Do you want to live a healthy life?” he asked. “Do you want to drink water that isn’t contaminated, breathe air that’s not polluted or walk in fields that are not otherwise strewn within the residues of airborne hazardous substances? Then you need to take this statute seriously.” The Canadian Environmental Protection Act, or CEPA, governs how toxic chemicals are identified and managed in Canada. It is in the midst of its first update in two decades, following a mandatory review that took place in 2016 and 2017.