If you add all the water needed to grow crops and feed animals for ingredients and materials, that’s the virtual water needed for a product. The figures are quite startling. (All gallons are US.)
I’ve reported on virtual water comparisons before, but this is the most comprehensive I’ve seen so far. It was published in a poster insert with National Geographic magazine in April 2010.
Richard Hall is chairman of Zenith International. You can also read his blog at BevBlog.
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