Report
Not only does the mandated SY3 (according to
the Safe Drinking Water Act) ensure that a review
of all NPDWRs is completed every six years, but it
also allows for enhancements to existing regulations,
while identifying those of immediate concern to
be monitored under the Unregulated Continuous
Monitoring Program (UCMP), or to have guidelines
developed for a NSDWR. With public health concerns
always in hand, combined with the issues related
to regional freshwater restrictions and shortages,
compliance at the state and local levels is at the
forefront.
list, a list of 116 contaminants (104 chemicals and 12
microbiological) was derived from insights offered by
industry experts and public review.
Highlights of key chemical contaminants from the
current CCL 3 list include various estrogen-based
hormones from pharmaceutical manufacturing, groups
of insecticides and fungicides widely used in agricultural
applications, and manufacturing contaminants such
as perchlorates, which are difficult to remove using
standard treatment methods.
From the list of microbiological contaminants, the
key highlights are those viruses and bacteria that
can cause varying degrees of gastrointestinal and
respiratory illnesses. Effectiveness of standard and
advanced systems in the treatment for these types of
microbiological contaminants ensures proper treatment
levels are determined when developing long-term
NPDWR requirements.
The date to submit candidates for the CCL 4 list
has passed (June 2012); however, this list, combined
with data collected in the effective treatment of
Importance Of Contaminated Candidate List 3
And The Contaminants Under Review For CCL 4
The development of the CCL 3 list was derived from
a larger list of more than 7,500 potential chemical and
microbial contaminants. This list was narrowed to 600
potential contaminants, utilizing public health risks
and potential occurrence in public drinking water
supplies as selection criteria. From that preliminary
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Water Online The Magazine
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