Comment by johnloeber

Here's what I'm curious about: how much water is used for every liter of drinking water? It seems clear that a "liter of water", which could be all kinds of polluted, is NOT the same as a liter of bottled or tap water. A liter of drinkable water has to undergo some filtration process, etc. and I'd be extremely interested in seeing how much water is used in that process. That would help put the headline's figure in context.