Oh, and if you think privatised water in the wealthy, developed world will NOT lead to riots in the streets - just wait, it will come. 
It's just taking (a lot) longer - exactly because those countries are richer. Richer countries have a couple of things that delay the bad outcomes.
- Not as many poor people to begin with, so fewer potential patient zeros
- Excellent healthcare, which is generally free at the point of use - so most the patient zeros that do happen can be treated before they spread a plague
- Excelent welfare systems so even among the poor hardly anybody is so poor that they can't afford to buy some water
- Excellent law enforcement - so regulations can be upheld well, and corruption minimized (so the private water is actually worth something)
- As a result of that, the ability to enforce things like 'a certain free minimum' as a condition of the contract.

All of which are things libertarians consider evil. Without those, private water = millions dead.