This is an easy and cheap way to get almost automatic savings. For example, a 2.5 gallon per minute showerhead will cut your rate of consumption by a third to a half. For a typical eight minute shower that means 20 gallons of water used rather than 30-40 gallons. A good low-flow showerhead will still give you a great shower. In fact, it might give three members of your household a good shower during the morning rush on the bathroom facilities instead of the one and half showers possible with a water guzzler showerhead.
Intelligent conservation can make for abundance.
Take showers rather than baths to get clean. An eight minute shower using a 2.5 gallon per minute showerhead uses 20 gallons of water. A typical bath tub holds 60 gallons of water. Take a bath to relax but take a shower to get clean. Wash clothing in warm water instead of hot or in cold water instead of warm.