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Disinfection of water for human consumption could be considered the most significant public health measure taken during the last century; destroying pathogens in drinking water has drastically reduced the incidence of waterborne diseases in all industrialized countries. Chlorination is currently used as water treatment due to its action; it is preferred to ozonization because is less expensive and leads to residual action. This new book highlights the risks that chlorination, as a water purifying treatment, may pose to the population health, as it causes the formation of various by-products, many of which are known to be carcinogenic. (Imprint: Nova)