This review article includes a historical sketches on develop a potable alkaline water by electrolysis called Alkali-ion water and results of researches by the examining committee on safety and efficiency of alkaline water in human health. The researches by the committee were categorized following six studies. (1) Properties of potable alkaline water. (2) Acute and chronic toxicity test on animals. (3) Clinical test. This test was carried out by three different methods. ① pH value in stomach was measured after drinking alkaline water on healthy human volunteer. ② Efficacy test on patients suffered from disorders in digestive tract after administration of alkaline water. ③ Efficiency test on patients suffered from disorders in digestive tracts by double blind control study on alkaline water and non-electrolyzed water. （4） Effect of alkaline water on abnormal fermentation in intestinal tracts in rats. (5) Effect of alkaline water on calcium nutrition and osteogenesis in rats. (6) Effect of alkaline water on gastric erosion in rats. From theses studies, it was proved that potable alkaline water is good to drink and beneficial effect on disorders in digestive tract. In addition, it was suggested that potable alkaline water increased body calcium content and ostrogenetic activity.
https://ror.org/02c3vg160 
