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

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

   While some bottled water is from a spring or filtration system, research shows that nearly 65% of bottled water sold in the U.S. comes from municipal tap water. But Rumpler says there can be ...

3. 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 ...

4. Point of use water filter - Wikipedia

   en.wikipedia.org/wiki/Point_of_use_water_filter

   Point of use water filters are used in individual houses or offices to provide filtration of potable water close to the point of consumption. [1] The related topic, point-of-use water treatment describes full-scale water treatment options and technologies designed to serve communities when municipal water treatment fails or is unavailable.

5. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Many household water filters and fish tanks use activated carbon filters to purify water. Household filters for drinking water sometimes contain silver as metallic silver nanoparticle. If water is held in the carbon block for longer periods, microorganisms can grow inside which results in fouling and contamination.

6. Biosand filter - Wikipedia

   en.wikipedia.org/wiki/BioSand_Filter

   A biosand filter (BSF) is a point-of-use water treatment system adapted from traditional slow sand filters. Biosand filters remove pathogens and suspended solids from water using biological and physical processes that take place in a sand column covered with a biofilm .

7. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   Instead of using the static pressure of a water supply line to force the water through the filter, pressure is provided by a hand-operated pump. These devices can generate drinkable water from seawater. The Portable Aqua Unit for Lifesaving (short PAUL) is a portable ultrafiltration-based membrane water filter for humanitarian aid. It allows ...