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  2. Coliform index - Wikipedia

    en.wikipedia.org/wiki/Coliform_index

    The coliform index is a rating of the purity of water based on a count of fecal bacteria. It is one of many tests done to assure sufficient water quality . Coliform bacteria are microorganisms that primarily originate in the intestines of warm-blooded animals.

  3. Indicator organism - Wikipedia

    en.wikipedia.org/wiki/Indicator_organism

    The most common indicators are total coliforms, fecal coliforms, E. coli, and enterococci. [2] The presence of bacteria commonly found in human feces, termed coliform bacteria (e.g. E. coli), in surface water is a common indicator of faecal contamination.

  4. Coliform bacteria - Wikipedia

    en.wikipedia.org/wiki/Coliform_bacteria

    Coliform bacteria are defined as either motile or non-motile Gram-negative non-spore forming bacilli that possess β-galactosidase to produce acids and gases under their optimal growth temperature of 35–37 °C. [1]

  5. Indicator bacteria - Wikipedia

    en.wikipedia.org/wiki/Indicator_bacteria

    Fecal coliforms are more useful as indicators in recreational waters than total coliforms which include species that are naturally found in plants and soil; however, there are even some species of fecal coliforms that do not have a fecal origin, such as Klebsiella pneumoniae. Perhaps the biggest drawback to using coliforms as indicators is that ...

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

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

    The Safe Drinking Water Act, which was passed by Congress in 1974, regulates the country’s drinking water supply, focusing on waters that are or could be used for drinking. This act requires ...

  7. Fecal coliform - Wikipedia

    en.wikipedia.org/wiki/Fecal_coliform

    In the U.S., fecal coliform testing is one of the nine tests of water quality that form the overall water-quality rating in a process used by U.S. EPA. The fecal coliform assay should only be used to assess the presence of fecal matter in situations where fecal coliforms of non-fecal origin are not commonly encountered. [1]

  8. Lead found in water at 7 elementary schools in Asheville area ...

    www.aol.com/news/lead-found-water-7-elementary...

    Asheville water is being treated regularly for aluminum, iron, chlorine, manganese, total coliform and E. coli. These results are posted on the water services recovery website and updated in real ...

  9. Fluoride in Drinking Water Is Actually Quite Safe — Here’s ...

    www.aol.com/fluoride-drinking-water-actually...

    Water fluoridation, which is the act of adding fluoride to drinking water to reach a recommended level, is designed to help prevent cavities, the ADA explains. The ADA refers to this as a “cost ...

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