Sorry but I do not really see the need for those machines as I get it it is just a simple solar powered vending machine so how does this help in regard of bad water quality in general? With them not having any sort of filtration systems or anything like that (at least I do not see any and they never mentioned anything about that in their video) how can they guarantee high quality water for a lower cost? I get the idea behind it and it is really good but maybe not the best way to get their (or I majorly misunderstood something).