Yes I'm sure http://en.wikipedia.org/wiki/Water_well http://en.wikipedia.org/wiki/Water_well would be of no use at all in that situation. More seriously – onc

Yes I'm sure http://en.wikipedia.org/wiki/Water_well http://en.wikipedia.org/wiki/Water_well would be of no use at all in that situation. More seriously – once basic survival needs are met, the next most important thing is education. Life expectancy, living standards, family size and income all correlate highly to education level. Want to stop HIV/AIDs? You can't do it just by handing out condoms. You need the users to understand why.