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  2. Here's How Often You Should Drain Your Water Heater ... - AOL

    www.aol.com/lifestyle/heres-often-drain-water...

    Draining your water heater is a key home maintenance task you won’t want to ignore.

  3. Water fluoridation - Wikipedia

    en.wikipedia.org/wiki/Water_fluoridation

    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] In the mouth, fluoride slows tooth enamel demineralization and enhances remineralization in early-stage cavities ...

  4. 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 ...

  5. Water heating - Wikipedia

    en.wikipedia.org/wiki/Water_heating

    For older houses where the water heater is part of the space heating boiler, and plumbing codes allow, some plumbers install an automatic gas shutoff (such as the "Watts 210") in addition to a TPR valve. When the device senses that the temperature reaches 99 °C (210 °F), it shuts off the gas supply and prevents further heating.

  6. Water fluoridation in the United States - Wikipedia

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

    The CDC recommends water fluoridation at a level of 0.7–1.2 mg/L, depending on climate. The CDC also advises parents to monitor use of fluoride toothpaste, and use an alternative water source other than a natural water source with a fluoride concentration above 2 mg/L, for children up to the age of 8.

  7. The two things you should never throw down the drain - AOL

    www.aol.com/article/lifestyle/2019/09/15/the-two...

    There are two items in particular that plumbers signify as the biggest culprit for drain blockages, especially during the holidays. The two things you should never throw down the drain Skip to ...

  8. Hydrogen fluoride - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_fluoride

    Hydrogen fluoride (fluorane) is an inorganic compound with chemical formula H F. It is a very poisonous, colorless gas or liquid that dissolves in water to yield hydrofluoric acid .

  9. 12 things you should never, ever pour down the drain - AOL

    www.aol.com/lifestyle/2019-09-14-12-things-you...

    From everyday food products to random things you have around the house, don't mess around with these 10+ items!

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