Here is away to save more than 10 gallons of water and keep your hair, if you have any.
While serving at a radar site atop a 4,000-foot mountain in South Korea, we had no water, except what was delivered by tanker. The road was often impassable, and as a result, severe water conservation was required.
I offer the following shower method, mandated under the conditions:
1. Turn on water, get wet, turn off water; 2. Soap and wash; 3. Turn on water, rinse; 4. Turn off water.
Water use is minimal and you are just as clean.