What uses more water: bathing or showering?
Showering for five minutes or less using a low-flow showerhead is the best method to saving water. If you shower for 10 minutes or longer with a traditional (non-low-flow) showerhead, you can use significantly more water than bathing, especially if you only fill the tub halfway. If you must use the bath, don’t fill it up all the way, plug the drain before you turn on the tap and add hot water later.