Some people must start by drinking very small amounts of alkaline water, such as 1-2 glasses of 8.5 pH per day. This is especially true of older people who often have accumulated toxins in their bodies over the course of their lifetime. Children under the age of 3 should not drink alkaline water, but only purified water from the ionizer (pH 7). Thus, they will benefit from the ionizer’s filtration that removes chlorine and other contaminants from tap water. Children between the ages of 4 years and 12 years should only drink 8.5pH or 9pH water.