Water Footprint

The water footprint expresses human appropriation of freshwater in volume terms. It counts the direct and indirect freshwater (blue water, grey water and green water) used to produce a product, but can also be applied to consumers, companies, nations, areas. It can be used as an indicator that provides information on the volume, location, time and source of water used and can be compared to water availability at the affected water bodies in order to assess risk of water scarcity and pollution.