LifeStraw is a water filter that filters a maximum of 1000 liters of water, enough for one person for one year that was designed by the Swiss-based Vestergaard Frandsen for people living in developing nations and for distribution in humanitarian crisis. LifeStraw Family filters a maximum of 18,000 liters of water, providing safe drinking water for a family of five for up to three years. The LifeStraw is a plastic tube 310 millimeters long and 30 millimeters in diameter, Water that is drawn up through the straw first passes through hollow fibers that filter water particles down to 0.2 microns across, using only physical filtration methods and no chemicals.
LifeStraw has been generally praised for its effective and instant method of bacteria and protozoa removal and consumer acceptability. Paul Hetherington, of the charity WaterAid, has criticized the LifeStraw for being too expensive for the target market. He also points to other important problems linked with accessing the water in developing countries, which wait to be solved, but are not addressed by the device itself.
The Daily Omnivore 
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