I was on the BBC World Service this lunchtime talking about water privatization in the developing world. I was up against Rudolf Amenga-Etego of the Ghanan National Coalition Against Privatisation. I pointed out that it is government control of water that has been the real problem: Ghana, almost half of the population is without regular clean water. Only by bringing in investment, greater transparency and greater expertise can we increase access to water - so that everyone has a clean water supply. Nationalized water systems, starved of investment, are a disaster.