One of the best ways to reduce water consumption while showering is to turn it off when you don’t need it. Unless you’re actively rinsing off, you don’t need the water on, so you can turn it off. So, while you’re shampooing, conditioning, or lathering up your body you can turn it off.

This will mess up the water temperature a little, but if you’re doing this you’re probably not that concerned with temperature comfort.