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  2. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Water purification is the process of removing undesirable chemicals, ... The traditional advice of boiling water for ten minutes is mainly for additional safety ...

  3. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Double-distilled water (abbreviated "ddH 2 O", "Bidest. water" or "DDW") is prepared by slow boiling the uncontaminated condensed water vapor from a prior slow boiling. Historically, it was the de facto standard for highly purified laboratory water for biochemistry and used in laboratory trace analysis until combination purification methods of ...

  4. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    Hippocrates believed that water had to be clean and pure. Rainwater was the best water, but had to be boiled and strained before drinking to get rid of the "bad smell" and to avoid hoarseness of the voice. [3] [4] He designed a crude water filter to “purify” the water he used for his patients. Later known as the “Hippocratic sleeve ...

  5. History of water supply and sanitation - Wikipedia

    en.wikipedia.org/wiki/History_of_water_supply...

    The chlorination of the water supply helped stop the epidemic and as a precaution, the chlorination was continued until 1911 when a new water supply was instituted. [125] Manual Control Chlorinator for the liquefaction of chlorine for water purification, early 20th century. From Chlorination of Water by Joseph Race, 1918.

  6. 'Continue to boil water': Richmond residents urged to ... - AOL

    www.aol.com/news/continue-boil-water-richmond...

    The City of Richmond last issued a "Boil Water Advisory" during Hurricane Isabel in 2003, according to the news release. After water services are fully restored, residents can resume non-drinking ...

  7. At what temperature does water boil? Explaining water's ... - AOL

    www.aol.com/news/temperature-does-water-boil...

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