World Economic Forum Knowledge Navigator - How Much Water Do We "Eat"?

World Economic Forum Knowledge Navigator - How Much Water Do We "Eat"?: "While the average human being requires between four and five litres of drinking water a day to survive, it takes 2,000-3,000 litres of water a day to produce the calories that same human being needs to eat every day. Producing the meat and other proteins prevalent in the modern diet requires even more water. We may drink only a few litres of water a day, but we 'eat'as much as 15,000 litres of water a day.

The pressure this places on water resources will only increase with global economic expansion. "...(click the link for more information)