The average Californian uses 10 times more water than the average Navajo reservation resident

Navajo:
10 gallons per day
Californian:
100 gallons per day

Californian:
100 gallons per day
Navajo:
10 gallons per day
Total water use includes additional categories such as landscaping and plumbing leaks.
United States Environmental Protection Agency, Water Footprint Calculator
Gabrielle LaMarr LeMee LOS ANGELES TIMES