- Clean Water
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Want Clean Water? Turn on the Lights
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From Scientific American -- New York City officials are building a water disinfection facility in Westchester County that will use ultraviolet (UV) light to destroy water-borne pathogens such as Escherichia coli, giardia, and cryptosporidium in reservoirs that serve city dwellers, as a measure to replace the current method of using chlorine to disinfect the drinking water. More companies are starting to kill deadly bacteria and strip out heavy metals in water using new technologies that range from ultraviolet (UV) light to microbubbles.
“ First proposed in 2003, the city got the ball rolling on the UV disinfection project shortly after the EPA in 2006 tightened restrictions on microbial pathogens allowed in drinking water. The UV facility, set to fire up in 2012, is expected to be the world's largest (pdf). ”

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