Found this completely by accident, but it's quite interesting and mentions that diets without meat use far less water. There's also an interview with the World Wildlife Fund's water footprint expert you can listen to where the questioner mentions vegetarian diets. Obviously he doesn't go on record saying he thinks people should become vegetarians, as if a massive wildlife or environmental organisation would say that
http://www.guardian.co.uk/environmen...20/water.food1
This 2nd link is a good little picture slideshow of different foods with info on the volume of water needed to produce them. Mentions at least 4 types of meat, plus eggs. Good info to have handy! (NB - as if the majority of pigs are farmed in the way their image shows! laughable. almost.)
http://www.guardian.co.uk/environmen...ture=336718185
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