How Much Water?

Water comes up on occasion as a topic related to taxation and society because of its character as a public good and a private commodity. A reader sent this infographic of interest, click on it to see a bigger version. Interesting advice on the bottom: to save water, drink beer (instead of milk). Or drink water, instead of everything else. It's so strange to me that it take more water to make instant potatoes, which are dehydrated potatoes, than to make the actual potatoes. I assume the same logic applies to things like powdered milk, detergents, etc.