High Quality Content by WIKIPEDIA articles! Artificial fluoridation of water, salt, and milk varies from country to country. Water fluoridation has been introduced to varying degrees in many countries, including Australia, Brazil, Canada, Chile, Ireland, Malaysia, the U.S., and Vietnam, and is used by 5.7% of people worldwide.Continental Europe largely does not fluoridate water, although some of its countries fluoridate salt; locations have discontinued water fluoridation in Germany, the Netherlands, and other countries. Although health and dental organizations support water fluoridation in the countries that practice water fluoridation, there has been considerable opposition to water fluoridation whenever it is proposed.