EPA, when implementing the CWA in1973, set E-coli limits for sewage treatment and most sewage treatment plants installed chlorination equipment. However, when organic matter is contacted with chlorine, it is halogenated and this creates carcinogens (like THM's) and endocrine disruptors. On the advise of the CDC and GAO, that this practice did not prevent waterborne deceases, was damaging to the environment, due what is ...more »
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