Chlorine Substitutes In Water May Have Risks

National Public Radio: Water systems across the country are changing the way they disinfect drinking water because the traditional disinfectant, chlorine, can leave behind toxic chemicals. But alternatives to chlorine are turning out to have risks of their own, says a scientist who wrote an analysis in the journal Science. The change in disinfectants comes a century after water systems in the U.S. began adding chlorine to prevent the spread of diseases like cholera and typhoid. For much of that time, people thought......

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