Despite frequent high profile cases of drinking water contamination - including Walkerton, North Battleford, and Kashechewan - Canada continues to lag in assuring the safety of drinking water to its citizens. This is the message from the Sierra Legal Defence Fund who released Waterproof 2: Canada's Drinking Water Report Card today.

In evaluating the drinking water systems of all 13 provinces and territories the report notes improved conditions since Walkerton, but slams the federal government for relying on patchwork provincial laws and failing to pass binding national standards for drinking water safety throughout the country. Unlike the United States and the European Union, Canada has no minimum national standards on drinking water, resulting in an 'F' grade going to the Feds.

Ontario garnered the nation's top grade for largely implementing the recommendations of the Walkerton Commission. Alberta, Quebec and Nova Scotia are the only provinces outside of Ontario to require advanced treatment of drinking water, such as state-of-the-art filtration.

So after failing to provide any leadership on climate change yesterday, it looks like Rona will now have to answer for Canada's failures to protect its drinking water.

Summary grades are below. You can also read the complete report online.