Water, Water ...

Water, water, everywhere,


And all the boards did shrink.


Water, water everywhere,


Nor any drop to drink.

- 
"The Rime of the Ancient Mariner" (1798)

Water supply shortage in China, India and other parts of the world is likely to be amongst the most important geo-political issues of the 21^st century.

http://yaleglobal.yale.edu/content/water-challenges-asia-powers-part-i

http://yaleglobal.yale.edu/content/water-challenges-asia-powers-part-ii