AWWA QTC97059

The American Water System (American) is the largest investor-owned water utility in the United States, serving over 7 million customers in 21 states. Because of its size, geographical dispersion, and active research department, American was an active participant in the Technical Working Group discussions that formulated the Interim Enhanced Surface Water Treatment Rule and the Disinfectant/Disinfection Byproduct Rule (collectively termed the microbial/disinfection byproduct cluster). The ability to access an extensive database of routine monitoring data, as well as unique research data, and the resources to compile this information within a short period of time, allowed American to authoritatively comment on various technical issues. The purpose of this paper is to summarize some of these activities.