To supplement the processes used for developing
the draft third Contaminant Candidate List
(CCL3) and better inform decisions made by the
US Environmental Protection Agency on future
CCLs, the authors offer an evaluation tool for
efficiently synthesizing, visualizing, and organizing
data for effective comparisons among contaminants.
Graphical presentations of health
effects-occurrence indexes were developed for
more than 300 chemical contaminants, including
those on the draft CCL3. A risk indexes framework
was then used to elucidate the extent of
available data, the data quality, and the underlying
uncertainties for occurrence and toxicity.
Choosing the appropriate contaminant for regulation
is a complex process that cannot be totally
automated; expert judgment will always be needed
at some point in the process. However, the framework
and recommendations presented here could
help facilitate the process and provide direction for
research funding. In addition, water suppliers could
use a similar process to assess emerging contaminants
in their watershed and make appropriate
treatment decisions. Includes 21 references, tables, figures.
| Edition : | Vol. 101 - No. 9 |
| File Size : | 1
file
, 600 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 09/01/2009 |
