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  2. Water fluoridation by country - Wikipedia

    en.wikipedia.org/wiki/Water_fluoridation_by_country

    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 ...

  3. Water fluoridation in the United States - Wikipedia

    en.wikipedia.org/wiki/Water_fluoridation_in_the...

    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 ...

  4. Water fluoridation - Wikipedia

    en.wikipedia.org/wiki/Water_fluoridation

    Fluoridation does not affect the appearance, taste or smell of drinking water. [1] Water fluoridation is the controlled addition of fluoride to public water supplies to reduce tooth decay. Fluoridated water maintains fluoride levels effective for cavity prevention, achieved naturally or through supplementation. [2]

  5. The Science Behind Fluoride in Drinking Water - AOL

    www.aol.com/science-behind-fluoride-drinking...

    Adding fluoride to drinking water reduces rates of cavities by around 25%, ... U.S. standards recommend fluoride levels of 0.7 milligrams per liter of water, and the NTP’s conclusion applied to ...

  6. What is fluoride and why is it in the water? - AOL

    www.aol.com/finance/fluoride-study-dividing...

    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.

  7. Fluoride in drinking water poses enough risk to merit new EPA ...

    lite-qa.aol.com/news/health/story/0001/20240925/...

    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.

  8. What to know about fluoride in drinking water - AOL

    www.aol.com/news/know-fluoride-drinking-water...

    President-elect Donald Trump has picked Robert F. Kennedy Jr. as his Health and Human Services secretary and while we don’t know what the policies will be, one thing Kennedy has signaled he ...

  9. Fluoride toxicity - Wikipedia

    en.wikipedia.org/wiki/Fluoride_toxicity

    In 2024, a U.S. government study released by HHS found higher levels of fluoride exposure, such as drinking water containing more than 1.5 mg/L (which is the recommended safe limit set by the WHO), are associated with lower IQ in children. [21] The associated meta-analysis was published in 2025. It reports a null association when concentration ...

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