[kosh2]

> Water, like money, circulates

I'm not an expert in this area but I have strong doubts that this argument is useful in this case.

Let's think of an example. Two people are die because of dehydration. Luckily they happen to find a full 1 liter water bottle.

One of the them quickly grabs it and drinks it all. Then she tells the utterly shocked other person: "Don't you worry, water, like money, circulates. You see, I will eventually pee out this water and it will evaporate and it will become rain and so on".

My point is, that the amount of usable water matters. If you have X liters of waters from wells, rivers and so on each year that you can access, it won't be any more just because there is a water cycle.