Safety of Water Fluoridation

• The Tolerable Upper Intake Level for children under 8 years of age (0.1 mg/kg/day) is exceeded by approximately 1 in 100 children in areas where the water fluoride concentration is 1.0 mg/liter or slightly higher

• In the 1930s and 1940s, no moderate or severe cases of enamel fluorosis were recorded in these areas

• Fluoride intake from water and the diet appears not to have increased since that time

• Additional intake by children at risk of enamel fluorosis almost certainly derives from the use of fluoride-containing dental products (toothpaste, prescription supplements)

• Institute of Medicine 1999