Re: It's a blue planet...
"Do YOU want to pay £1.43 per litre* for WATER? Can everyone in Africa afford £1.43 per litre?"
Petrol/diesel is highly taxed in most non-producing countries, and also in some producing countries. In some of the big producing countries, it's dirt cheap. The downside is that in some of those high producing oil economies, they have low levels of water, so water can cost as much if not more than petrol.
Without the tax on fuel, petrol is cheaper than bottled mineral water, at least here in the UK :-)