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How is water pressure generated?

Asked by 2davidc8 (7761points) July 17th, 2014

The water from our taps, faucets and hoses comes out with considerable pressure. I’m wondering how is this pressure generated, especially since it has to be distributed to so many houses, each with many faucets, taps, toilets, showers, etc. And the water has to go the top floor of high buildings.

I’ve seen water tanks on hills, so is the water generated by gravity? Even so, I can’t imagine how this alone is sufficient to generate enough water pressure for everybody.

Can someone explain?

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