Water Footprint Tool – Calculate your water footprint

Water Footprints Are an Assessment of Direct and Virtual Water Use Patterns

How is it measured?

A water footprint is measured in terms of the volume of water consumed, evaporated and polluted. The Water Footprint Network, whose research provides the data that drive GRACE’s calculator, splits water footprints into three corresponding categories:

Blue Water Footprint

The amount of surface water and groundwater required (evaporated or used directly) to produce an item

Green Water Footprint

The amount of rainwater required (evaporated or used directly) to make an item.

Grey Water Footprint

The amount of freshwater required to dilute the wastewater generated in manufacturing, in order to maintain water quality , as determined by state and local standards.

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