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Exposure to trihalomethanes—especially brominated trihalomethanes—in residential community water supplies (CWS) is associated with an increased risk of chronic kidney disease (CKD), according to a study published online July 2. Danielle N. Medgyesi, Ph.D. and colleagues conducted a prospective cohort study to examine long-term exposure to trihalomethanes in residential CWS and its association with CKD risk using data from the California Teachers Study, including female teachers and administrators enrolled between 1995 and 1996 with data linked to mortality and health care records. The study sample included 89,320 female participants with 6,242 cases of CKD. The researchers observed a clear exposure-response association...

Results from a large population-based cohort study including 60,000 men and women in central Sweden suggest that exposure to higher concentrations of disinfection byproducts in drinking water is associated with elevated risk of colorectal cancer in men. Drinking water is a very important part of our diet that is consumed daily by essentially everyone in the population. Hence, assuring a that the public drinking water maintains a high standard is crucial. Chlorination of drinking water is a cheap and effective method widely used to control waterborne infectious disease. A drawback is, however, that reactive chemical byproducts can be formed in...