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2. 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.

3. 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 ...

4. 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 .

5. Water softening - Wikipedia

   en.wikipedia.org/wiki/Water_softening

   Water softening. Idealized image of water softening process involving replacement of calcium ions in water with sodium ions donated by a cation-exchange resin. Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is ...

6. 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. The history of water filtration is closely ...

7. This hairstylist-approved dryer is on sale for just $27 ... - AOL

   www.aol.com/lifestyle/this-hairstylist-approved...

   What reviewers say 💬. Over 1,000 Walmart shoppers thought so highly of this hair dryer, they gave it a five-star rating.. Pros 👍 "Better than a Dyson," raved one fan. "The Dyson is so heavy ...