- Fluoride is often added to tap water supplies to help build strong, healthy teeth that resist decay. Water fluoridation has been recognized as one of the 10 greatest public health achievements of the 20th century by the Centers for Disease Control and Prevention.

- Tap water from your local supplier is treated to eliminate harmful chemicals, minerals, and pathogens that may occur in the source water. Chlorine is a common disinfectant used to kill germs and has greatly contributed to a nearly 30-year increase in life expectancy during the 20th century.