In Canada fresh water is rarely in short supply. How could it be when we are home to the Great Lakes — a water resource that accounts for 20 per cent of the world’s surface fresh water supply?

But the supply is in danger.

Released last summer, director Kevin McMahon's documentary Waterlife tells the story of the Great Lakes and the millions of people who rely on their waters to survive. But it also explores the human threat to the Lakes. Explaining how, among other things, toxins, sewage and invasive species are destroying this treasured and vital resource.

Watch the film. I’m going to. But even if you don’t — check out Waterlife’s interactive website — an extensive and eye-opening exploration of the many facets of water from politics to industry to, of all things, music.