DBP CARCINOGENS IN WATER “chlorinated drinking water accounts for nearly 15 percent of all rectal cancers and nine percent of all bladder cancers … increases the chances of contracting rectal cancer by 38 percent and contracting bladder cancer by 21 percent … higher incidence of cancer of the esophagus, rectum, breast, and larynx, as well as Hodgkin’s disease.”
http://www.alive.com/articles/view/18356/chlorinated_drinking_water