People absolutely use water by this metric, but most of it goes to their lawn.
Re:The Colorado River is shrinking
by throwawayboise on Wednesday July 21, 2021 @03:18PM
(#27910780)
Evaporated water eventually falls as rain, though probably somewhere else.
The water used in agriculture will mostly evaporate or become part of the plant. Little of it will make it back to the source.