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Secondary disinfection practices of water utilities, particularly the use of chloramines, are at the center of several national drinking water policy discussions. As a response to this ongoing dialogue, AWWA commissioned the Secondary Disinfection Practices Survey – a web‐based survey of water utilities – to determine the percentage of utilities currently using chloramines and those intending to convert to the use of chloramines in the future. Results of the survey indicate 68% of utilities currently use chlorine for secondary disinfection, 29% use chloramines, and 3% use no secondary disinfectant. The results of this survey serve to inform national drinking water policy discussions (i.e., the Stage 2 Disinfectants/Disinfection Byproducts Rule) and to support the continued increase in the use of chloramines.
Seidel et al. (Sat,) studied this question.
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