By Ambrose Evans-Pritchard - Telegraph.co.uk

A Goldman Sachs report said water was the "petroleum for the next century", offering huge rewards for investors who know how to play the infrastructure boom. The US alone needs up to $1,000bn (£500bn) in new piping and waste water plants by 2020.

http://www.telegraph.co.uk/money/main.jhtml?xml=/money/2008/06/05/ccwater105.xml