Descaling and running bottled water to resolve the growling noise when pumping water is like wetting yourself in a dark suit. It gives you a warm feeling for a while and no one will notice. Seriously, the problem is defective design by Keurig. They have littered the internet with propaganda about descaling or putting the machine on a soft surface, or even replacing it as if it is your fault because you bought the model you bought. I don't recall ever seeing a Keurig commercial in which the machine made a loud growling noise, have you? No, it is THEIR problem not ours. As others have said, "vote with your feet" Go buy someone else's machine and maybe Keurig will start taking better care of their customers.