The March 2012 issue of Water Technology had an interesting article by Jack Barber, titled pH paranoia: Understanding alkaline water claims. The take-home message was there is no health benefit to alkaline water. In fact, "...once alkaline water enters your stomach, your body simply pours in greater amounts of [gastric] acid to neutralize it." See the original article here.
I have been researching and developing drinking-water-from-air technologies since 1984. As a physical geographer, I strive to contribute an accurate, scientific point-of-view to the field.