Disinfection byproducts (DBPs) have been regulated
in finished drinking water for more than 25
years. This article, adapted from the Clarke Prize Lecture
delivered by the author, analyzes several aspects
related to the science and policy of DBP regulation and
control and highlights deficiencies that are undermining
public health protection. These deficiencies include
limitations in the epidemiological studies that were
conducted on the adverse health effects of DBPs and
led to their regulation as well as shortcomings in the
regulatory approach that the US Environmental Protection
Agency has adhered to over the past quarter-century.
In addition, water suppliers have been relatively
shortsighted in their methods of controlling DBP formation
and must look to long-term management and
treatment methods. Drawing on his 31 years of
research on the subject, the author has developed concrete
suggestions for improving DBP health effects
studies, regulatory approaches, and control
strategies. Includes 24 references, figures.