Housing, at least multi family housing, isn’t was uses all of the water. 90% of the water is used by agriculture and landscaping, remove the almond/alfalfa farm

Housing, at least multi family housing, isn’t was uses all of the water. 90% of the water is used by agriculture and landscaping, remove the almond/alfalfa farms and shut down the golf courses and you’ve solved the “crises” and you are now using much less water than is naturally available