Paul E. Stackelberg Edward T. Furlong Michael T. Meyer Steven D. Zaugg R.L. Lippincott Jacob Gibs 2007 <p>Ninety eight pharmaceuticals and other organic compounds (POOCs) that were amended to samples of chlorinated drinking-water were extracted and analyzed 1, 3, 6, 8, and 10 days after amendment to determine whether the total chlorine residual reacted with the amended POOCs in drinking water in a time frame similar to the residence time of drinking water in a water distribution system.</p><p>Results indicated that if all 98 were present in the finished drinking water from a drinking-water treatment plant using free chlorine at 1.2&nbsp;mg/L as the distribution system disinfectant residual, 52 POOCs would be present in the drinking water after 10&nbsp;days at approximately the same concentration as in the newly finished drinking water. Concentrations of 16 POOCs would be reduced by 32% to 92%, and 22 POOCs would react completely with residual chlorine within 24&nbsp;h. Thus, the presence of free chlorine residual is an effective means for transforming some POOCs during distribution.</p> application/pdf 10.1016/j.scitotenv.2006.11.003 en Elsevier Persistence of pharmaceuticals and other organic compounds in chlorinated drinking water as a function of time article