The “alkaline” in alkaline water refers to its pH level. A pH level is a number that measures how acidic or alkaline a substance is on a scale of 0 to 14. For example, something with a pH of 1 would be very acidic and something with a pH of 13 would be very alkaline. Alkaline water has a higher pH level than regular drinking water. Because of this, some advocates of alkaline water believe it can neutralize the acid in your body. Normal drinking water generally has a neutral pH of 7. Alkaline water typically has a pH of 8 or 9. However, pH alone isn’t enough to impart substantial alkalinity to water. Alkaline water must also contain alkaline minerals and negative oxidation reduction potential (ORP). ORP is the ability of water to act as a pro- or antioxidant. The more negative the ORP value, the more anti-oxidizing it is.
Alkaline water is somewhat controversial. drinking alkaline ionized water may have benefits for people included 100 found a significant difference in whole blood viscosity after consuming high pH water compared to regular water after a strenuous workout. Viscosity is the direct measurement of how efficiently blood flows through the vessels. Those who consumed high pH water reduced viscosity by 6.3 per cent compared to 3.36 per cent with standard purified drinking water. This means blood flowed more efficiently with alkaline water. This can increase oxygen delivery throughout the body However, more research is needed beyond these small studies. In particular, research is needed to answer other claims made by alkaline water supporters.
Natural or artificial
Water that’s naturally alkaline occurs when water passes over rocks — like springs — and picks up minerals, which increase its alkaline level. However, many people who drink alkaline water buy alkaline water that’s been through a chemical process called electrolysis. This technique uses a product called an ionizer to raise the pH of regular water. Makers of ionizers say that electricity is used to separate molecules in the water that are more acidic or more alkaline. The acidic water is then funnelled out. Some scientists advise using reverse-osmosis to adequately purify water before connecting an alkaline ionizer (which can raise pH and add minerals. A study published by the world health organisation cautions against drinking water with low mineral content, which is created by reverse-osmosis, distillation, and other methods (without additional mineralization) on a regular basis.
Drinking natural alkaline water is generally considered safe since it contains natural minerals. However, you should use caution with artificial alkaline water, which likely contains fewer minerals than necessary for good health than its high pH would have you believe, and may contain contaminants. Overuse may leave you deficient in minerals.