I own a distilled water machine. Just wanted to add that it does say in my manuel that you shouldn't only drink distilled water.
check out this link:
drinking water how much water should I drink ?
Distilled water
Many people decide to buy a distilled water maker. Whilst this is safe to drink it should not be drunk continuously over a long period of time. Distilled water is empty water and it will help to draw out the toxins from the body. However prolonged usage will leach vital minerals and vitamins from the body.
Anyone drinking distilled water for a prolonged period of more than a few days should very definitely take mineral and vitamin supplements but we do not recommend drinking this permanently. It's far better to drink this a few times a day as well as drinking normal filtered water whilst ensuring you get all the vitamins and minerals your body needs either from your diet or by using a supplement as well.