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  2. Drinking water quality in the United States - Wikipedia

    en.wikipedia.org/wiki/Drinking_water_quality_in...

    Fluoride pollution from various industrial emissions can also contaminate water supplies. In a few areas of the United States, fluoride concentrations in water are much higher than normal, mostly from natural sources. In 1986, EPA established a maximum allowable concentration for fluoride in drinking water of 4 milligrams per liter (mg/L).

  3. Tap water - Wikipedia

    en.wikipedia.org/wiki/Tap_water

    Tap water is commonly used for drinking, cooking, and washing. Indoor tap water is distributed through indoor plumbing, which has been around since antiquity but was available to very few people until the second half of the 19th century when it began to spread in popularity in what are now developed countries.

  4. Water fluoridation - Wikipedia

    en.wikipedia.org/wiki/Water_fluoridation

    Fluoridation does not affect the appearance, taste, or smell of drinking water. [1] It is normally accomplished by adding one of three compounds to the water: sodium fluoride, fluorosilicic acid, or sodium fluorosilicate. Sodium fluoride (NaF) was the first compound used and is the reference standard. [40]

  5. Is fluoride in drinking water safe? RFK Jr. says fluoride ...

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

    Another 11.6 million people drink from water systems that naturally contain a high enough level of the chemical to have the dental health benefits pointed to by dentists. ... of adding fluoride to ...

  6. Which drinking water is healthiest? The pros and cons of tap ...

    www.aol.com/lifestyle/drinking-water-healthiest...

    While some bottled water is from a spring or filtration system, research shows that nearly 65% of bottled water sold in the U.S. comes from municipal tap water. But Rumpler says there can be ...

  7. The Science Behind Fluoride in Drinking Water - AOL

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

    That decision does not necessarily mean fluoride must be removed from U.S. drinking water—the EPA can choose to address the situation in a number of ways, including releasing a public notice ...