Question: how much does it cost in water to run a dishwasher?
Answer: Dishwashers. That being said, dishwashers have been estimated to use anywhere from 6-15 gallons of water (3 gallons of water if it recycles). That translates to $0.12 – $0.29 for both the cost of water and the cost of heating that water (or $0.06 if it recycles).