Fluoridation

n. addition of fluoride to something (i.e. water)

Water fluoridation is the practice of adding fluoride compounds to water with the intended purpose of reducing tooth decay in the general population. Many North American and Australian municipalities fluoridate their water supplies in the belief that this practice will reduce tooth decay at a low cost. Currently 66% of United States residents on public water supplies have fluoridated water.
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Noun
1. the addition of a fluoride to the water supply (to prevent dental decay)
(synonym) fluoridization, fluoridisation
(hypernym) addition
(derivation) fluoridate, fluoridize, fluoridise

The addition of a chemical to increase the concentration of fluoride ions in drinking water to reduce the incidence of tooth decay.

fluoridation
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