Water Footprint
The total volume of freshwater used to produce goods and services consumed by an organisation, measured across the full supply chain including blue water (surface/ground), green water (rainwater), and grey water (dilution of pollutants).
What is Water Footprint?
A water footprint measures the total freshwater appropriated by an organisation, product, or process across its full lifecycle. It was introduced by Arjen Hoekstra at the University of Twente and is now standardised under ISO 14046.
The footprint comprises three components: blue water (consumption of surface and groundwater), green water (rainwater stored in soil, particularly relevant for agriculture), and grey water (the volume of freshwater needed to dilute pollutants to acceptable quality standards).
While distinct from carbon accounting, water footprinting is increasingly integrated into corporate sustainability strategies. Many carbon-intensive operations (data centres, manufacturing, agriculture) are also water-intensive, and climate change is exacerbating water scarcity in many regions. Leading frameworks like CDP, GRI, and CSRD now require water disclosure alongside carbon reporting.
Practical Examples
A food manufacturer calculates the water footprint of its products across the supply chain, discovering that agricultural inputs account for 92% of total water consumption.
A data centre operator measures its blue water footprint from cooling systems and finds it uses 1.8 litres per kilowatt-hour of IT load.
A textile company maps its grey water footprint to identify dyeing processes that require the highest volume of freshwater for pollutant dilution.
How Climatise Helps
Climatise tracks environmental metrics beyond carbon, including water consumption data. By integrating water and carbon data in a single platform, organisations can identify co-benefits where reducing emissions also reduces water use.
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