Answered By: Madelyn Horton Last Updated: Sep 06, 2018 Views: 87
Here are some resources that should help you research the minimum amount of water needed to meet a household's basic daily water needs in the United States?
As for how many gallons of water does the average household in California use, here are links to some web sites that will help you answer the questions.
Explore the website of California State Water Resources Control Board
SD Union Tribune Article (2014) San Diego County Water Use by District
California water "use statistics" - California Single Family Water Use Efficiency Study