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  2. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    The conductivity of water is measured in Siemens per meter (S/m). Sea-water is typically 5 S/m, [5] drinking water is typically in the range of 5-50 mS/m, while highly purified water can be as low as 5.5 μS/m (0.055 μS/cm), a ratio of about 1,000,000:1,000:1. Purified water is used in the pharmaceutical industry.

  3. Ultrapure water - Wikipedia

    en.wikipedia.org/wiki/Ultrapure_water

    Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including: organic and inorganic compounds; dissolved and particulate matter; volatile ...

  4. Drinking water quality standards - Wikipedia

    en.wikipedia.org/wiki/Drinking_water_quality...

    For example, when comparing drinking water quality parameters in Kenya and Ethiopia with published guideline values (thresholds), scientists compared several standards: the Kenyan drinking water standard, Ethiopian standard, WHO health guideline, WHO Aesthetic guideline and the EAS (East African Standards) for natural potable water.

  5. Drinking water quality in the United States - Wikipedia

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

    EPA published standards in 1991 to ensure that total chromium is limited to 0.1 milligrams per liter or 100 parts per billion in drinking water. It is an odorless and tasteless metal that can be naturally occurring in rocks, plants, soil and volcanic dust, and animals.

  6. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    Water quality refers to the chemical, physical, and biological characteristics of water based on the standards of its usage. [1] [2] It is most frequently used by reference to a set of standards against which compliance, generally achieved through treatment of the water, can be assessed.

  7. Drinking Water Directive 2020 - Wikipedia

    en.wikipedia.org/wiki/Drinking_Water_Directive_2020

    The Directive is intended to protect human health by laying down healthiness and purity requirements which must be met by drinking water within the Community (see water quality). Articles 1 and 2 make clear the goal is wholesome and clean water as ‘intended for human consumption’, for instance in drinking, cooking, and for food.

  8. Chemical purity - Wikipedia

    en.wikipedia.org/wiki/Chemical_purity

    [1] [2] Some of the commonly used grades of purity include: ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the Reagent Chemicals publication, issued by the ACS. [3] [4] It is suitable for food and laboratory uses.

  9. Nestlé Pure Life - Wikipedia

    en.wikipedia.org/wiki/Nestlé_Pure_Life

    Nestlé Pure Life is a brand of bottled water from Nestlé Waters globally and licensed to BlueTriton Brands in North America. The brand was first established in 1998 in Pakistan and is now available in 21 countries in Asia, the Americas, Africa, and Europe. [1]