I'm assuming that some of that number is mixing in industrial uses of water?
That is, I'd love to say it is something silly like US people shower/bathe far more, but I have a hard time seeing how personal uses of water can add up to that in any way.
That tracks with what I would largely expect, but https://www.worldometers.info/water/ has Germany at 856? That has the US at 3732. Such that I don't think I can just correct up.
Sounds like a lot of ambiguity on what different people are measuring, which is obnoxious. Understandable, mind. Still obnoxious.
That is, I'd love to say it is something silly like US people shower/bathe far more, but I have a hard time seeing how personal uses of water can add up to that in any way.
If you find a good read on this, please share it!