Ever wondered about your water footprint? We have been bombarded with information about carbon footprints for years but at least as dramatic for the environment is the amount of water used in almost everything we consume. Taking a critical look at our H2O consumption could make a big difference.

In many parts of the world access to water is a life and death issue - shortages and pollution can have a major impact.

Dutch researchers have developed the water footprint concept and it is now gaining ground around the world.

What do you make of this idea - is the size of your water foot print something you've ever thought about? Leave you comments below.

In this segment from our sustainability show Earth Beat host Marnie Chesterton talks to the Executive Director of the WaterFootprint Network Derk Kuiper.