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  2. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    A large-scale flocculation 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 ...

  3. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    The history of water filters can be traced to the earliest civilisations with written records. Water filters have been used throughout history to improve the safety and aesthetics of water intended to be used for drinking or bathing. In modern times, they are also widely used in industry and commerce.

  4. Reverse osmosis - Wikipedia

    en.wikipedia.org/wiki/Reverse_osmosis

    Around the world, household drinking water purification systems, including a RO step, are commonly used for improving water for drinking and cooking. Such systems typically include these steps: a sediment filter to trap particles, including rust and calcium carbonate

  5. Water purification - Wikipedia

    en.wikipedia.org/wiki/Water_purification

    Membrane filters are widely used for filtering both drinking water and sewage. For drinking water, membrane filters can remove virtually all particles larger than 0.2 μm—including giardia and cryptosporidium.

  6. Purified water - Wikipedia

    en.wikipedia.org/wiki/Purified_water

    Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use. Distilled water was, formerly, the most common form of purified water, but, in recent years, water is more frequently purified by other processes including capacitive deionization, reverse osmosis, carbon filtering ...

  7. 30 more drinking water systems in RI may need to filter out ...

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

    Alex Kuffner, Providence Journal. 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...

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