Are distillation systems expensive to operate?
Distillation systems use about 3 kWh of electricity for each gallon of water that is distilled. The national average cost of electricity per kWh in the US is 6¢ which means each gallon of distilled water costs about 18¢, a fraction of the cost of buying bottled water! You can find your personal cost per gallon by multiplying 3 times the kWh rate in your area.