Thank you so much! That settles the drinking water issue for me. By coincidence, I ordered and received your book from Amazon this week. I gave it a quick overview and my immediate thought was that I wish I had it two years ago. Well, better late than never. I expect that this book will help increase my odds of keeping MAC at bay. And I think it should be handed to every patient when the diagnosis is made. I know it would have saved me much time and energy, and given me confidence and hope.