What I agree with, though, is that water is definitely not the most precious thing in the world. Nor is drinkig water.
A nice analogy I like is Photovoltaic cells. Those require pure silicon to be produced, but are really expensive. Why? Isn't silicon the most abundant element in the eraths crust? Well, it is, actually. But we need /pure/ silicon, remember! And to make the silicon pure is very expensive. And the same works for water.
You people seem to misjudge the amplitude of the problem. The prerequisite to a well is groundwater. Which is accounted for in the calculation. There are wars for wells in poorer countries, already TODAY. Water may get used up in the sense that we have no "drinking water". You wouldn't drink salt water, for example. And to get pure drinking water from it requires, as already mentioned, lots of energy. That's the problem, not the chemical element H2O.
Not everyone is a native english speaker. some people try to learn more than one language soo show some respect.
Nice English =/= 77% Frozed.
thats why we filter water
Water doesn't have to be in rivers and lakes to be useable. Talk to anybody who has a well. All a well does is draws water from an underground aquifer, so if you account for that, you've got a whole lot more to use. Also, like many others have said, water doesn't get used up, per se. It will always be around, and as such, saltwater will not always be saltwater, etc. Water is really not the most precious thing in the world.
I agree with @natstar. We can reuse water for very, extremely long amounts of time. Water does not get "used up." Humans drink water, then, in their pee, water is there again. Humans can't "use up" water. Maybe, if you electrolysed the water into hydrogen and oxygen, then maybe that would count as "using it up," but even then, you could combust it to yield, yet again, water.
frozed? do you not mean frozen +1
The problem is not the supply of water as a chemical. There's plenty of it. The problem is the supply of water on a global scale in a form that you would drink. Salt water will dry you from inside, so the only option to use it are destilleries. And those use trndemous amounts of energy, we couldn't afford that on a global scale. And, Self_Destruct: No, water is not as rare as pure gold. But this was metaphorical, I believe.