This free shower water calculator estimates how many gallons your household uses on showers each year, and how much you could save with shorter showers or a WaterSense showerhead.
Shower Water Calculator
Find out how much water your showers use in a year, and how much a shorter shower or a WaterSense showerhead could save.
Federal rules cap showerheads at 2.5 gallons a minute. WaterSense labeled showerheads use no more than 2.0 gallons a minute, according to the US EPA. Real flow can be lower than the label.
Heating water also takes energy, so saving hot water helps your power bill too.