Food should carry water ‘footprint'

The report highlights how it's important to look not only at how much water is used, but where and what impact it has. "For example, research cited in the report shows that while agriculture uses an average 24% of water across the EU, this rises to a whopping 80% in some regions. Some types of food are also "thirstier" than others, with tomatoes, sugar-cane and meat and dairy products being particularly water intensive. So although, for instance, tomatoes grown in southern Spanish sunshine (rather than fossil-fuel heated greenhouses) might generate fewer greenhouse gases, they will use a lot of water from a region desperately short of it." The report's co-author Tom MacMillan said: "Public awareness of water scarcity remains low. In the UK, citizens are rarely exposed to the direct effects of severe water shortage and cannot readily see the links between their purchases and water shortage in other countries. Water use is not reflected in the price of the final product." MacMillan said the labels would not involve "litres per kilo" stickers, but should show good water stewardship – companies working hard to use water in ways that conserve it, use it efficiently and are environmentally sustainable. Sustain's co-ordinator, Jeanette Longfield, who commissioned the report, added: "This information should go alongside other vital elements of sustainability, such as greenhouse gases, nutrition, and fair trade so people can get a full picture of the impact of the food they buy. But, most important, when companies measure their impact they often improve it. Labelling, on the basis of water stewardship, could soon offer people products that cause less environmental damage."