Coffee equipment’s are like human bodies. They have very fine arteries supplying the boiler with water. Overtime water deposits can cause clogging of the line and in many cases chemicals used in treating water may cause damage to the boiler. A common myth is that that distilled water is not good for coffee because it ruins the coffees taste. If your coffee relies on the water to taste better, we recommend going to our store and purchasing Casa d’Iorio coffee. Its flavor stands on its own.