Coherence in water footprint calculations
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number
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4
The water footprint of a group of producers, for example within one industrial sector, can be found by taking the sum of the water footprint of all producers together.
WF of a group of producers (sector)
Water footprint
of a producer
3
The water footprint of a producer or company is equal to the sum of the water footprints of the products that the producer or company produces
WF of a group
of consumers
6
The water footprint of a community of consumers, for example the inhabitants of a country, is equal to the sum of the water footprints of the members of this community.
Water footprint
of a consumer
5
The water footprint of an individual consumer is equal to the sum of the water footprints of the various products that the comsumer consumes
Product water footprints
2
The water footprint of a product is the aggregate of the water footprint of the various process steps relevant in the production of the product.
Process water footprints
1
The water footprint of one single process step is the basic building block of all water footprint calculations.
WF within a geographically delineated area
7
The water footprint within a geographically delineated area, for example a country or a river basin, is equal to the sum of the water footprints of all processes taking place in that area
[Source: Hoekstra et al., 2011]