Green Party Leader Elizabeth May has tabled a petition calling on the federal government to take urgent action on Canada’s aging asbestos-cement pipes due to the potential dangers of drinking tap water containing the deadly fibre. “This is an understudied and unregulated problem,” May said Thursday in the House of Commons. “Believe it or not, many municipalities rely on old cement water pipe delivering water to millions of Canadians, and the pipes contain asbestos fibres.”