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All Hong Kong residents receive natural occurring fluoride in water, [27] at about half the traditionally-recommended fluoride level. The Water Supplies Department fluoridates rainwater from 17 local reservoirs, in 21 treatment plants. [35] Recent tests showed drinking water to have an average fluoride level of 0.48 mg/L, and a maximum of 0.69 ...
The same was true for fluoride levels of less than 1.5 mg/L, which is the upper safe limit of fluoride in drinking water as established by the World Health Organization.
The U.S. Public Health Service currently recommends a fluoride level of 0.7 milligrams per liter of water to maximize oral health benefits while minimizing the risk of fluorosis, a condition ...
The research had two goals: (1) to warn communities with a high concentration of fluoride of the danger, initiating a reduction of the fluoride levels in order to reduce incidence rates of fluorosis, and (2) to encourage communities with a low concentration of fluoride in drinking water to add fluoride in order to help prevent tooth decay. By ...
Water fluoridation is not mandatory, and while there is a recommended fluoride concentration in drinking water (0.7 milligrams per liter) from the CDC, that level is not an enforceable standard.
In 2011, the World Health Organization suggested a level of fluoride from 0.5 to 1.5 mg/L (milligrams per litre), depending on climate, local environment, and other sources of fluoride. [5] In the United States, the HHS's guideline has been set at 0.7 mg/L since 2011. [6] Bottled water typically has unknown fluoride levels. [7]
Though fluoride can come from a number of sources, drinking water is the main source for Americans, researchers say. Nearly two-thirds of the U.S. population currently gets fluoridated drinking water, according to CDC data. Since 2015, federal health officials have recommended a fluoridation level of 0.7 milligrams per liter of water.
Water fluoridation, which is the act of adding fluoride to drinking water to reach a recommended level, is designed to help prevent cavities, the ADA explains. The ADA refers to this as a “cost ...
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