AWWA ACE68895

This powerpoint presentation begins by presenting a brief overview of emerging disinfection byproducts (DBPs) of concern, and factors affecting the formation of regulated DBPs. The formation of emerging halogenated DBPs, organic-nitrogen precursors, is presented along with the formation of Halonitromethanes, the formation of emerging non-halogenated DBPs, nitrosamines, occurrence vs toxicity - cytoxicity and genotoxicity database from Plewa and colleagues. Presentation summary and conclusions indicate the following: a wide range of DBPs in water includes N-DBPs of health concern; impacted by type of precursors - NOM, AOM, EfOM, bromide, nitrite, and certain polymers; impacted by disinfection scenario - Cl₂, NH₂Cl, ClO₂, and/or O₃; need to balance control of regulated DBPs with that of emerging DBPs - some emerging DBPs higher toxicity, however, need to consider both occurrence and toxicity. Includes table, figures.