The term alkaline refers to the water's pH level, which ranges from 0 to 14. A pH of above 7 is alkaline, while a pH below 7 is acidic. "Water typically has a neutral pH of 7, while alkaline water ...

Dietitians consistently named probiotics, alkaline water, and juices — particularly of the "cleanse" or "detox" variety — as the products they wish people wouldn't waste their money on.