BPA mimics the hormone estrogen and does not occur naturally in the environment. Studies suggest that exposure to the chemical can ultimately lead to prostate or breast cancer.

"We are continuing our leadership on this issue and Canadians can rest assured that we are working hard to monitor and manage Bisphenol A," Environment Minister Jim Prentice said in a statement. The government said the listing allows it to develop regulations to manage risks posed by BPA.

Rick Smith, executive director of Environmental Defense Canada, applauded the announcement.

"It's a great victory for every mom and dad who sent a letter to their MP demanding the federal government do a better job protecting the health of Canadians," Smith said. The toxic listing is the foundation for any legal action, said Smith, who predicted BPA will be removed from all food and beverage containers in a few years.

In August 2010, Statistics Canada reported that measurable levels of BPA were found in the urine of 91 per cent of Canadians aged six to 79.