How come we never run out of water if everyone uses it?

Question

How come we never run out of water if everyone uses it?

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Answer 1

Fun fact: We could run out of water… If we were really careless about it.

But we’re quite good at recycling it, removing as much pollutants as we can from it, and all that jazz. Plus, nature does a lot of that itself, by evaporating, or the water slipping down into the ground and leaving some contaminants into the ground instead, where other stuff can deal with it…