Hi Pat, I dont know the answer. I sure like alkalized water but the side effect of extreme dry mouth is very real from my experience. maybe i am the first to see this? Its a pretty new fad right now. also, i believe being on ppis contributed to this? but i really dont know. i just know when i drink the supr high ph it doesnt take long for me to get the extreme dry tongue. However, i didnt get the dry tongue til almost a year after drinking it. I am very warry of high ph water now. interestingly, the SIDES of my tongue got dryer than the middle. my sides wre like sand paper. i took me a while to make the connection. for those of you who around here a lot please observe if you see others post similar side effects. Maybe its just me?