What is water footprint? Blue water consumption of blue water resources footprint (surface and groundwater)along the supply chain of a product. Green water consumption of green water resources (rainwater insofar as it does not become footprint run-off). volume of freshwater that is required to Gray water assimilate the load of pollutants given footprint natural background concentrations and existing ambient water quality standards. 2018/10/25
What is water footprint? 2018/10/25 • consumption of blue water resources (surface and groundwater) along the supply chain of a product. Blue water footprint • consumption of green water resources (rainwater insofar as it does not become run-off). Green water footprint • volume of freshwater that is required to assimilate the load of pollutants given natural background concentrations and existing ambient water quality standards. Gray water footprint
Categories Green Water Footprint volume of rainwater evaporated or incorporated into product volume of surface or groundwater Blue Water Footprint evaporated,incorporated into product or returned to other catchment or the sea. Grey Water Footprint volume of polluted water
Categories Green Water Footprint Blue Water Footprint Grey Water Footprint volume of polluted water. volume of rainwater evaporated or incorporated into product volume of surface or groundwater evaporated,incorporated into product or returned to other catchment or the sea
Components of a water footprint Direct water footprint Indirect water footprint Green water footprint Green water footprint Water withdrawal consumption Water Non-consumptive Blue water footprint Blue water footprint Water use Grey water footprint Grey water footprint pollution Water The traditional statistics on water use Direct water use refers to the water use by the consumer or producer himself. Indirect water use refers to the water use in the production chain of products bought by the consumer or producer. [Hoekstra,2008]
Direct water footprint Indirect water footprint Green water footprint Green water footprint Blue water footprint Blue water footprint Grey water footprint Grey water footprint Water consumption Water pollution [Hoekstra, 2008] Non-consumptive Water use Water withdrawal The traditional statistics on water use Components of a water footprint ◆ Direct water use refers to the water use by the consumer or producer himself. ◆ Indirect water use refers to the water use in the production chain of products bought by the consumer or producer
Why water footprint?
Why water footprint?
Shrinking Aral Sea ◆ The water footprint can make a link between consumption in one place and impacts on water systems elsewhere. ◆ Water use for cotton production can have major impacts on the environment. Particularly intensive irrigation schemes can have disastrous effects,as shown for example in the case of Uzbekistan and the desiccation of the Aral Sea. Shrinking Aral Sea
◆ The water footprint can make a link between consumption in one place and impacts on water systems elsewhere. ◆ Water use for cotton production can have major impacts on the environment. ◆ Particularly intensive irrigation schemes can have disastrous effects, as shown for example in the case of Uzbekistan and the desiccation of the Aral Sea. Shrinking Aral Sea Shrinking Aral Sea