We have 2 of these big dispensers, one sits on the counter and one is in the fridge. We get our water from a fresh water spring and then run it through the zero water dispenser, best tasting water ever. Love the water tester, really shows people what they are drinking, bottled water has to be the worst for dissolved solids. Have changed a lot of people's opinions just showing them how tap water compared to bottled water, compared to spring water, compared to zero water. Best purchase we have ever made!