Interactive online tool based on an elaborate academic database that differentiates between green, blue and grey water footprint along the supply chain. It helps companies prioritize their water efforts in relation to crops, geographies and specific water challenges. The tool can also be used for identifying optimal sourcing areas.

Description

The Global Water Footprint Standard has been applied and tested worldwide across many sectors. It includes guidance on how to calculate the green, blue and grey water footprint in order to understand the allocation of water resources. The Water Footprint Assessment Tool is a free online application that helps companies calculate and map water footprints, assess sustainability and identify actions to reduce footprints. Developed by the Water Footprint Network in collaboration with the University of Twente, it combines the Global Water Footprint Standard and its database, WaterStat, along with user-provided data.

The Water Footprint Assessment tool allows you to complete either a geographic or production assessment. The Geographic Assessment provides a quick overview of water footprints for different crops and geographies i.e. world, region, country, river basin level (405 basins) as an initial step to identify high-risk areas. The data used in this part of the assessment comes from peer-reviewed research. The second part of the tool, the Production Assessment, can be used by businesses either at portfolio or at commodity level with the help of additional input data from the company. The tool only calculates freshwater consumption (green, blue water and grey water).

The Water Footprint Network is based on open source philosophy. Companies that wish to be involved in research and development projects and have access to water footprint experts can become partners.

Farming

Basin, country, crop, facility or supply-chain specific water footprints (composed of blue, green and grey water) are set against water scarcity to assess sustainability in a certain region.

Irrigation is covered as one of the largest contributor to the blue water footprint. The blue component in the “process water footprint” of growing a crop is calculated as the blue component in crop water use divided by the crop yield.

The grey water footprint for crop production takes into consideration chemical application rate, leaching-run-off fraction, acceptable concentration and natural pollutant concentration.

The grey water footprint for crop production takes into consideration chemical application rate, leaching-run-off fraction, acceptable concentration and natural pollutant concentration.

Covered in the blue component of the process water footprint. A distinction is made between dry and wet cleaning.

Covered in terms of water in the indirect water footprint, i.e. water that can be associated with the production of energy consumed at the farm/factory or during the production of imported fodder, fertilizer etc.

The grey water footprint is an indirect measure of effluent chemical and thermal pollution.

Processing

Basin, country, crop, facility or supply-chain specific water footprints (composed of blue, green and grey water) are set against water scarcity to assess sustainability in a certain region.

The grey water footprint is an indirect measure of effluent chemical and thermal pollution.

A distinction is made between closed cooling systems and open cooling systems, where water is evaporating. If evaporated, it is covered in the blue component of the process water footprint. If not, it is instead included in the grey water footprint, based on the degree of effluent pollution.

Covered in the blue water footprint.

If evaporated, it is covered in the blue component of the process water footprint. If not, it is instead included in the grey water footprint, based on the degree of effluent pollution.

Covered in terms of water in the indirect water footprint, i.e. water that can be associated with the production of energy consumed at the farm/factory or during the production of imported fodder, fertilizer etc.

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