Both Kangen Water and Pi Water boast significant health benefits for people who drink them. Pi Water was discovered in Japan, then studied and replicated by a Japanese agricultural scholar, Dr. Akihiro Yamashita. Kangen Water also originates from Japan; a Japanese company named Enagic manufactures Kangen Water machines. Although the waters originate from the same country, they do have significant differences.
While Kangen Water is put through the process of ionization, Pi Water is not. Essentially, ionized water is water that has been put through electrolysis. Ionized water is considered healthy because it blocks the oxygenation of human cells, which cause aging and illness.
Both Pi Water and Kangen Water are more alkaline than untreated water; however, Kangen Water measures slightly higher in alkaline. The pH of Pi Water is about 7.4, while the pH of Kangen Water is between 8.5 and 9.5. The pH number is a measure of how alkaline the water is.
Ferric Ferrous Iron
Pi Water is said to be living water because it was discovered to be the water responsible for an increase in plant blooming in rural Japan. When researchers studied the properties of the water, they discovered it contained small amounts of ferric ferrous iron. While Kangen Water does not contain ferric ferrous iron, it is the main ingredient that Pi Water boasts makes Pi "living water."
Bio-Energy vs. Redox Potential
Pi Water claims to be a high-energy liquid very similar to the energy of human beings. Because of the addition of ferric ferrous iron, Pi Water enthusiasts claim it is a living water and therefore is extremely healthy. Kangen Water does not claim to be a living water; it does claim to be high in redox potential. After going through the ionization process, Kangen Water's redox potential is vastly greater than normal water, which enthusiasts claim makes it a potent antioxidant.