Worldwide Water Footprints

Dark colors are used to indicate a water usage level that exceeds the worldwide average of 1,240 cubic metres per person per year. According to the Water Footprint Organization, China has an annual per capita water usage of only 700 cubic metres, while the USA expends five times as much: around 2,500 cubic metres. Many European countries have some of the world's highest water consumption levels.

High water consumption is often linked to the export of agricultural good - for example, in Germany this accounts for 53 percent of the nation's water footprint.

The Water Footprint Organization defines the "water footprint" of a nation as follows: The water footprint varies significantly from nation to nation and is influenced by the population's usage level, climatic conditions and water usage practices in regions in which consumer goods are manufactured. Not all goods used within a given country are manufactured in that country. Consequently, a nation's water footprint consists of two components: the use of domestic water resources as well as the resources of other nations (from which products are imported).

Illustration: GfK Geomarketing.

This is a nce piece of work. However, be aware that this so-called "water footprint" is in contrast to carbon fotprints just volumes of water without any relation to impact. For further discussion see the following Letter in PNAS: http://www.pnas.org/content/106/35/E93 Stephan Pfister - 02/09/2009 - 17:04