15. Take showers
Do you take a bath every day, or frequently? Consider switching to showers instead — at least much of the time — leaving baths as infrequent treats. Yes, a bath can be a delightful, but so can a hot shower. And baths tend to consume much more hot water than showers do — especially if you take reasonably brief showers. According to the folks at wateralculator.org, “The average bath uses 35 to 50 gallons of water, whereas a 10-minute shower with a low-flow showerhead only uses 25 gallons.”