The goal of a navy shower is to reduce the amount of water you use to about 3 gallons. To reach this goal you must first understand your average water consumption.
The typical flow rate of a shower is approximately four gallons per minute. If you have difficulty measuring your flow rate for some reason, use this number to predict the total gallons used.
Perform your washing quickly, especially if you have an inefficient water heater. Waiting too long can create unpleasant variances in the temperature.
