Today, against a backdrop of sharply increasing demand, growth in the world population and the growing impact of an unsettled climate, water has become one of the most precious natural resources of our planet.

This 1950s' film looks at the measures to preserve water flow from the Rocky Mountains. With the steady falling of the water table, the exploitation of timber stands and the recession of glaciers, water conservation was an urgent concern of the Alberta and federal governments.

Andean communities fight to protect their water from contamination by mining companies.