Fluoridation vs. Defluoridation — What's the Difference?

To add a fluorine compound to (a drinking water supply, for example) for the purpose of reducing tooth decay.

Defluoridation is the downward adjustment of the level of fluoride in drinking water. Worldwide, fluoride is one of the most abundant anions present in groundwater.

(chemistry) The act or process of adding fluoride to something, especially water.

The removal of fluoride, especially from a water supply Category:en:Fluorine

The addition of a fluoride to the water supply (to prevent dental decay).

The addition of a fluoride to the water supply (to prevent dental decay)