So are you suggesting that only people who can afford $100 for a bottle of water get to survive? Is that what you're getting at? Fuck the poor?
If something like water is scarce, it has to be used carefully and efficiently. A technology exists that optimizes efficient use of scarce resources. It's called a free market. On the other hand, an "authority" taking over the resource and metering it out ensures very different outcomes: black markets, elitism, cronyism, corruption, and use of violence to enforce the arrangement.