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2. Ceramic water filter - Wikipedia

   en.wikipedia.org/wiki/Ceramic_water_filter

   Ceramic water filters (CWF) are an inexpensive and effective type of water filter that rely on the small pore size of ceramic material to filter dirt, debris, and bacteria out of water. This makes them ideal for use in developing countries , [ 1 ] and portable ceramic filters are commonly used in backpacking .

3. Portable water purification - Wikipedia

   en.wikipedia.org/wiki/Portable_water_purification

   They are also called point-of-use water treatment systems and field water disinfection techniques. Techniques include heat (including boiling), filtration, activated charcoal adsorption, chemical disinfection (e.g. chlorination , iodine, ozonation , etc.), ultraviolet purification (including sodis ), distillation (including solar distillation ...

4. CamelBak - Wikipedia

   en.wikipedia.org/wiki/CamelBak

   CamelBak's hydration packs come in capacities of 1.5 to 3.0 litres (50–100 US fluid oz) in a backpack style primarily for biking, hiking and other outdoor activities, with smaller belt-type 0.83 to 1.3 litre (28–45 US fluid oz) packs designed for runners and walkers.

5. Water filter - Wikipedia

   en.wikipedia.org/wiki/Water_filter

   Filtration as a method of water purification was established in the 18th century, and the first municipal water treatment plant was built in Scotland in 1832. However, the aesthetic value of water was important at the time, and effective water quality standards did not exist until the late 19th century. [18]

6. LifeStraw - Wikipedia

   en.wikipedia.org/wiki/LifeStraw

   Use of LifeStraw. The original LifeStraw is a plastic tube 22 centimetres (8 + 5 ⁄ 8 in) long and 3 centimetres (1 + 1 ⁄ 8 in) in diameter. [8] Water that is drawn up through the straw first passes through hollow fibres that filter water particles down to 0.2 µm across, using only physical filtration methods and no chemicals.

7. Slow sand filter - Wikipedia

   en.wikipedia.org/wiki/Slow_sand_filter

   Slow sand filters are recognized by the World Health Organization, [15] Oxfam, [16] and the United States Environmental Protection Agency [17] as being a superior technology for the treatment of surface water sources in small water systems. According to the World Health Organization, "Under suitable circumstances, slow sand filtration may be ...