According to a discussion paper published on Health Canada’s website, since 1973 much has been learned about the impact of chemicals and biological contaminants on human health. Apart from setting limits on arsenic and lead, the current regulations do not specify limits for chemicals or contaminants.
CANADA: Tougher bottled water regulations on the way
The Canadian federal government is planning to tighten regulations governing bottled water which have remained largely unchanged for 30 years. "The current regulations are outdated, not changed since 1973, with a few amendments in the 1980s," said Claudette Dalpe, associate director of Health Canada's food regulatory program.