Canada will update its process for restricting toxic substances and enshrine a right to a healthy environment into law under legislation approved Tuesday.

Bill S-5, an overhaul of one of Canada’s core environmental laws, became law Tuesday night after passing a final vote in the Senate. Both the Senate and House of Commons made dozens of amendments to the bill in recent weeks.

The measure rewrites crucial sections of the Canadian Environmental Protection Act, an law that provides the legal foundation for environmental enforcement in Canada. The act hasn’t seen major change since it was enacted in 1999, leading many …