Peter Brabeck-Letmathe, Nestlé S.A. Chairman, takes part in a debate on 'The Politics of Water' at the World Economic Forum in Davos.

"Water is a human right, for the 5 litres you need to drink each day and the 20 litres for hygiene. But I don't think it's a human right to fill up your swimming pool or water your golf course with subsidised water."