Water Treatment Options

"Unfortunately, research has established that Cryptosporidium is "much more resistant to inactivation by chlorine and other disinfectants" than is the better known (and much more benign) Giardia. In the absence of clear and convincing evidence to the contrary, therefore, it's reasonable to infer that iodine-based germicides—whose mechanism of action is similar to that of chlorine—are not necessarily effective against Cryptosporidium."
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 (Submitted by Noel Thu Apr 29, 2004 )