The water fluoridation controversy arises from political, moral, ethical, economic, and safety concerns regarding the fluoridation of public water supplies. Public health authorities throughout the world find a medical consensus that water fluoridation at appropriate levels is a safe and effective means to prevent dental caries.[1] Authorities' views on the most effective fluoride therapy for community prevention of tooth decay are mixed; some state water fluoridation is most effective, while others see no special advantage and prefer topical application strategies.[2][3] Those opposed argue that water fluoridation has no or little cariostatic benefits, may cause serious health problems, is not effective enough to justify the costs, and pharmacologically obsolete.[4][5][6][7]