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Water fluoridation is the controlled addition of fluoride to a public water supply to reduce tooth decay, and is handled differently by countries across the world. [2]Water fluoridation is considered very common in the United States, Canada, Ireland, Chile and Australia where over 50% of the population drinks fluoridated water.
Fluoridation is however still clearly necessary in the U.S. because unlike most European countries, the U.S. does not have school-based dental care, many children do not visit a dentist regularly, and for many U.S. children water fluoridation is the primary source of exposure to fluoride. [36]
In most of the world, fluoride is not added to the public water supply. Some countries add fluoride to table salt. In some regions, fluoride levels in water are naturally high.
A 2012 study found that 25 countries have artificial water fluoridation to varying degrees, with 11 of them delivering fluoridated water to more than 50% of their population. It found that a further 28 countries have water that is naturally fluoridated, though in many of them the fluoride concentration is above the maximum recommended level.
Across the world, tooth decay has decreased since the 1970s, even in countries where fluoride is not added to water. Some of the countries where water is not fluoridated take a different approach ...
Adding fluoride to drinking water reduces rates of cavities by around 25%, ... People in countries including Australia and Canada also consume fluoride in drinking water.
Fluorite production (tonnes) by country Country (or area) Production World 5,500,000 China * 3,000,000 Mexico 936,433 South Africa * 240,000 Russia * 210,000 Spain
The U.S. Public Health Service’s recommendation is a fluoride concentration of 0.7 mg/L of drinking water—and there were not enough data to determine if 0.7 mg/L of fluoride exposure in ...