Well, for starters the stuff is carcinogenic....
"Cancer risk among people drinking chlorinated water is 93% higher than among those whose water does not contain chlorine."
U.S. Council of Environmental Quality
http://www.cleanwateramerica.com/inf...utchlorine.cfm
I won't use carcinogenic chemicals, where simple techniques that have been used for thousands of years will safely take care of the original problem of waterborne disease.
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