| http://www.w3.org/ns/prov#value | - UV light is used mainly as a non-chemical disinfection technology, and is favored because of what it does not do: no taste or odor changes, no chemical residual to be removed, and importantly no micro-organisms have demonstrated any tolerance to UV, unlike chlorine, which a number of pathogens, including Listeria and Cryptosporidium have become tolerant to very high chlorine or chlorine dioxide do
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