| http://www.w3.org/ns/prov#value | - Clear water combined with some bleach dosing (aka chlorine disinfection), should render perfectly safe and drinkable water, and all for less than $10.Probably best of all, there is always the option of boiling...the problem with this is that its very energy intensive and if you use wood/charcoal/kerosene, its simply too expensive. (I tend to boil my water usually in the developing world, except wh
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