Water fluoridation is the controlled adjustment of fluoride to a public water supply solely to reduce tooth decay. Fluoridated water contains fluoride at a level that is effective for preventing cavities; this can occur naturally or by adding fluoride.

What does the word fluoridated mean?

transitive verb. : to add a fluoride to (something, such as drinking water) to reduce tooth decay.

What is meant by water fluoridation?

Community water fluoridation is the process of adjusting the amount of fluoride in drinking water to a level recommended for preventing tooth decay.