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  2. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

  3. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    Automatic pressure filters, where the water is forced under pressure through the filtration system, were innovated in 1899 in England. [9] Limited drinking water standards were first implemented in the US in 1914, but it would not be until the 1940s that federal drinking water standards were widely applied.

  4. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Reverse osmosis ( RO) is a water purification process that uses a semi-permeable membrane to separate water molecules from other substances. RO applies pressure to overcome osmotic pressure that favors even distributions. RO can remove dissolved or suspended chemical species as well as biological substances (principally bacteria ), and is used ...

  5. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Water purification. Water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids, and gases from water. The goal is to produce water that is fit for specific purposes. Most water is purified and disinfected for human consumption ( drinking water ), but water purification may also be carried out ...

  6. 30 more drinking water systems in RI may need to filter out ...

    www.aol.com/30-more-drinking-water-systems...

    April 12, 2024 at 5:17 AM. PROVIDENCE – About 30 additional public drinking water systems in Rhode Island may need to install systems to filter out so-called “ forever chemicals ” that have ...

  7. Drinking water - Wikipedia

    en.wikipedia.org/wiki/Drinking_water

    Drinking water. Drinking water that is supplied through a tap ( tap water ). Drinking water or potable water is water that is safe for ingestion, either when drunk directly in liquid form or consumed indirectly through food preparation. It is often (but not always) supplied through taps, in that case, it is also called tap water.

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