After 1950, scientists from Japanese universities discovered a way to obtain water with the same characteristics through electrolysis . Large alkaline water ionizers
were built in collaboration with the Japanese government.
Alkaline ionized water began to be used in Japanese hospitals and in 1966, the Ministry of Health approved it as a medical therapy .
Later the South Korean government also recognized the alkaline water ionizer as a medical device .
Homemade models of alkaline water ionizers starting from those built in Korea, were presented in the United States in 1985. In 1986 a toxicity test was conducted by a laboratory in Los Angeles according to specific methods approved by the FDA; the tests revealed no toxicity . From that moment alkaline water ionizers began to spread in the United States.