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  2. Water chlorination - Wikipedia

    en.wikipedia.org/wiki/Water_chlorination

    Water chlorination is the process of adding chlorine or chlorine compounds such as sodium hypochlorite to water. This method is used to kill bacteria, viruses and other microbes in water. In particular, chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery, and typhoid. [1][2][3]

  3. Chlorine - Wikipedia

    en.wikipedia.org/wiki/Chlorine

    Chlorine. orthorhombic (oS8) Chlorine is a chemical element; it has symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature. It is an extremely reactive element ...

  4. Drinking water quality in the United States - Wikipedia

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

    Appearance. Drinking water quality in the United States is generally safe. In 2016, over 90 percent of the nation's community water systems were in compliance with all published U.S. Environmental Protection Agency (US EPA) standards. [ 1 ] Over 286 million Americans get their tap water from a community water system.

  5. Chlorophenol red - Wikipedia

    en.wikipedia.org/wiki/Chlorophenol_red

    The pH properties of chlorophenol red are used to selectively determine the amount of chlorine dioxide in drinking water. Chlorophenol red selectively reacts with 0.1–1.9 mg/L chlorine dioxide at pH 7. [ 6 ]

  6. CT Value - Wikipedia

    en.wikipedia.org/wiki/CT_Value

    CT Values are an important part of calculating disinfectant dosage for the chlorination of drinking water. A CT value is the product of the concentration of a disinfectant (e.g. free chlorine) and the contact time with the water being disinfected. It is typically expressed in units of mg-min/L. The goal of disinfection is the inactivation of ...

  7. Drinking water - Wikipedia

    en.wikipedia.org/wiki/Drinking_water

    The amount of drinking water required to maintain good health varies, and depends on physical activity level, age, health-related issues, and environmental conditions. [2] [3] For those who work in a hot climate, up to 16 litres (4.2 US gal) a day may be required. [2]

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