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Water Footprint Network distinguishes two types of partnership: Professionals and
These companies and universities are our current partners Partners Country;
There are many professionals who are connected to the Water Footprint
A water footprint can be calculated for a particular product, for any well-defined
Everything we use, wear, buy, sell and eat takes water to make.
The water footprint measures the amount of water used to produce each of the goods and services we use. It can be measured for a single process, such as growing rice, for a product, such as a pair of jeans, for the fuel we put in ourcar, or for an entire multi-national company. The water footprint can also tell us how much water is being consumed by a particular country – or globally – in a specific river basin or from an aquifer.
The water footprint allows us to answer a broad range of questions for companies, governments and individuals. For example:
Depending on the question you are asking, the water footprint can be measured in cubic metres per tonne of production, per hectare of cropland, per unit of currency and in other functional units. The water footprint helps us understand for what purposesour limited freshwater resources are being consumed and polluted. The impact it has depends on where the water is taken from and when. If it comes from a place where water is already scarce, the consequences can be significant and require action.
The water footprint has three components: green, blue and grey. Together, these components provide a comprehensive picture of water use by delineating the source of water consumed, either as rainfall/soil moisture or surface/groundwater, and the volumeof fresh water required for assimilation of pollutants.
The water footprint looks at both direct and indirect water use of a process, product, company or sector and includes water consumption and pollution throughout the full production cycle from the supply chain to the end-user.
It is also possible to use the water footprint to measure the amount of water required to produce all the goods and services consumed by the individual or community, a nation or all of humanity. This also includes the direct water footprint,which is the water used directly by the individual(s) and the indirect water footprint – the summation of the water footprints of all the products consumed.
Green water footprint is water from precipitation that is stored in the root zone of the soil and evaporated, transpired or incorporated by plants. It is particularly relevant for agricultural, horticultural and forestryproducts.
Blue water footprint is water that has been sourced from surface or groundwater resources and is either evaporated, incorporated into a product or taken from one body of water and returned to another, or returned ata different time. Irrigated agriculture, industry and domestic water use can each have a blue water footprint.
Grey water footprint is the amount of fresh water required to assimilate pollutants to meet specific water quality standards. The grey water footprint considers point-source pollution discharged to a freshwater resourcedirectly through a pipe or indirectly through runoff or leaching from the soil, impervious surfaces, or other diffuse sources.
"The interest in the water footprint is rooted in the recognition that human impacts on freshwater systems can ultimately be linked to human consumption, and that issues like water shortages and pollution can be better understood andaddressed by considering production and supply chains as a whole," says Professor Arjen Y. Hoekstra, creator of the water footprint concept.
"Water problems are often closely tied to the structure of the global economy. Many countries have significantly externalised their water footprint, importing water-intensive goods from elsewhere. This puts pressure on the water resourcesin the exporting regions, where too often mechanisms for wise water governance and conservation are lacking. Not only governments, but also consumers, businesses and civil society communities can play a role in achieving a better managementof water resources."
A film by UNESCO WWAP. Produced and animated by Steve Cutts
What''s the water footprint of your current lifestyle? You might be surprised!
Want to find out more? Check out our extended personal water footprint calculator!
Learn more about how we define and calculate water footprints, direct and virtual water use and water accounting. Read more
In the US, almost a quarter of residential water is used for lawns, gardens and pools – and in some places it''s as much as three-quarters. Learn more about outdoor water use and how to be more efficient. Read more
It takes a lot of water to create energy in the form of electricity and fuel, and it takes a lot of energy to move, heat and treat water. Saving energy saves water, and vice versa. Read more
Millions of gallons of water go into the products you buy, use and throw away. Read more
Learn about how water, climate and the environment interact and impact each other. Read more
Learn more about how water, energy and food are all interconnected. Read more
Get tips on how to save waterExplore our educational materialsRead our latest news and articles
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The water footprint of meat is a higher number than many people might realize. While many Americans expect to eat a certain amount of meat, and they might think, "Well, I don''t eat that much," they might be surprised by just how much meat (and dairy) they actually consume every day. This is an important […]
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