Friends – DDT was found in the lower
outwash unit of the Velsicol Superfund site in St. Louis, MI (along with PBBs
DDT breaks down to DDE, and EPA has just
decided we don’t need a drinking water level regulation for DDE because
there’s not enough of it showing up in water all over the country.
Anyone know if that means that EPA won’t have to consider that in its cleanup
targets for the contamination at the site?
Just curious – (the process
described below seems weird to me.)
From: U.S. EPA
Sent: Thursday, July 24, 2008 2:00
Subject: Water News Release (HQ):
EPA Determines Regulation Not Needed for 11 Potential Drinking Water
News for Release: Thursday, July 24, 2008
U.S. Environmental Protection Agency (EPA)
EPA Determines Regulation Not Needed for 11
Potential Drinking Water Contaminants
Contact Information: Enesta Jones, (202)
(Washington, D.C. - July 24, 2008) The U.S. Environmental Protection Agency has
made a final determination not to regulate 11 contaminants on the second
drinking water contaminant candidate list (CCL
2). The agency has concluded that the contaminants do not occur nationally in
public water systems, or occur at levels below a public health concern. The
agency's final regulatory determination is based on extensive review of health
effects, occurrence data and public comments.
"Sound science and public health drive EPA's decisions under the Safe
Drinking Water Act," said Benjamin H. Grumbles, EPA's assistant
administrator for water. "We will continue to thoroughly review new and
emerging contaminants to ensure that citizens and our environment are protected."
The 11 contaminants include naturally occurring substances, pesticides,
herbicides, and chemicals used (or once used) in manufacturing. While none of
the contaminants were found nationally at levels of public health concern in
public water systems, EPA is updating health advisories for seven of the
contaminants to provide current health information to local officials for
situations where the contaminants may be present.
EPA is updating health advisories for boron; dacthal mono- and di-acid
degradates;1,3-dichloropropene (Telone); 2,4-dinitrotoluene, and
2,6-dinitrotoluene; and 1,1,2,2-tetrachloroethane. EPA has determined that updated or new health advisories are not needed
for 1-dichloro-2,2-bis(p-chlorophenyl) ethylene (DDE);
s-ethyl propyl thiocarbamate (EPTC); Fonofos; and Terbacil, because the national monitoring data showed almost no
occurrence at levels of public health concern.
A regulatory determination is a formal decision on whether EPA should initiate
a rulemaking process to develop a national primary drinking water regulation
for a specific contaminant. Under the Safe Drinking Water Act, every five years
EPA develops a CCL and then makes a regulatory
determination for at least five contaminants on the list. In 2005, the agency
published the second CCL, which listed 51
contaminants. In May 2007, EPA requested public comment on its preliminary
regulatory determinations not to regulate 11 of these 51 CCL
Information on the Drinking Water Contaminant Candidate List and Regulatory Determinations:
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