The University of Massachusetts Amherst
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Graduate Student Presents Talk on New York City Water System

Civil & Environmental Engineering graduate student Amanda Keyes presented a talk on April 21st titled "Modeling DBPs in the NYC System with Free Chlorine or Chloramines as Residual Disinfectants" at the annual Water Event and Expo of the New York section of the American Water Works Association (NY-AWWA). The event took place at the Saratoga Hilton and Conference Center in Saratoga Springs, NY.

The talk presented the results of work Keyes and her advisor, Dr. David Reckhow, have done investigating the formation of Disinfection Byproducts (DBPs) in the New York City (NYC) Water System.  Since 2006, the researchers have been studying DBP precursors in NYC reservoirs and conducting laboratory kinetic studies to look at the formation of various DBPs under different treatment conditions.  By conducting DBP formation tests on NYC water at different times of the year and under different pH, temperature, and disinfectant dosing conditions, the researchers have developed a set of data which can be used to calibrate models to predict DBP formation and disinfectant decay. The development of models that accurately predict DBP formation in water systems can be an excellent tool in making informed water treatment decisions and investigating how changes in water quality will influence DBP production.