hey drgary, So here's what I did. I removed the group head and poured water in the boiler, just below the hole where the group head used to be. I turn the machine on, and let it reach boiling temperature (about 5min). Turned the machine off. Let the water sit until cool. With a flash light I looked inside

Hadn't seen that video before. That was very enlightening to see that someone with a very developed palate couldn't identify the difference. I've been using RPavlis water, and my wife and I could swear that the water tastes inferior to distilled water and also to tap water. There's just something about the potassium bicarbonate taste. I