Greenpeace

Here are a few links where Greenpeace addresses the Problem of clean water supply:

http://www.greenpeace.org/seasia/en/news/greenpeace-launches-project-cle...

http://www.greenpeace.org/seasia/en/greenpeace-photo-contest

Virtual Water was also a subject in the german greenpeace magazin:

http://www.greenpeace-magazin.de/index.php?id=5020&tx_ttnews[backPid]=23&tx_ttnews[tt_news]=58122&cHash=434b462fdb

(See Publications)
http://virtualwater.eu/

http://beta.greenaction.de/beitrag/thema-virtuelles-wasser-und-hanf