Using water is not the same as depleting water.
We use water, but it recycles itself. Using water doesn't mean it's been removed from the planet.

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Perhaps (interstellar steam rockets excluded), but it is often effectively removed from use.
The natural replenishment rate is well below our use rate. That's why central California is sinking, we pulled so much water from the ground that it's collapsing beneath the farm belt, while also taking so much river water the fish can't survive.

Using it usually means contaminating or evaporating it. The latter will be recouped eventually by simple condensation, but the former is often a difficult process to reverse and often can be permanent.

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