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  2. Do filtered showerheads really work? Experts weigh in - AOL

    www.aol.com/news/filtered-showerheads-really...

    It’s best to get your water tested by an EPA-registered lab, although you can buy at-home water test kits. At-home kits can’t give you in-depth information and tend to be much less accurate ...

  3. Water testing - Wikipedia

    en.wikipedia.org/wiki/Water_testing

    The Drinking Water Inspectorate is a section of Department for Environment, Food and Rural Affairs set up to regulate the public water supply companies in England and Wales. [6] Water testing in England and Wales can be conducted at the environmental health office at the local authority. [7] See Drinking Water Inspectorate.

  4. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    Water quality refers to the ... free chlorine residual, ... Tools available to the general public include on-site test kits, commonly used for home fish tanks, ...

  5. Water flow test - Wikipedia

    en.wikipedia.org/wiki/Water_flow_test

    A set of three water pressure measurements are recorded from two hydrants. One hydrant is known as the residual hydrant or test hydrant and is located on or near the water main where a new water connection is desired. From this test hydrant, a static pressure and a residual pressure will be measured.

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  7. Winkler titration - Wikipedia

    en.wikipedia.org/wiki/Winkler_titration

    In the test, an excess of manganese(II) salt, iodide (I −) and hydroxide (OH −) ions are added to a water sample causing a white precipitate of Mn(OH) 2 to form. This precipitate is then oxidized by the oxygen that is present in the water sample into a brown manganese -containing precipitate with manganese in a more highly oxidized state ...

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