Lisa Christ

All - One of our stakeholders has identified inaccurate information on the EPA web site (see below). The study that supports the 1991 rule is still the scientific basis for the estimate of 20% or more contribution from drinking water of total lead exposure. We need to ensure that the information on the agency's web site and in materials is correct. We've identified two web sites at HQ that we are revising. I need your assistance in identifying and revising the incorrect information in other places. 1) EPA web sites that incorrectly state "up to 20%" 2) Brochures, factsheets, etc that incorrectly state "up to 20%" Please complete corrections to web sites as soon as possible. We will compile a list of materials and develop a plan with you for making corrections to other materials. If you have questions or concerns please contact Jeff Kempic. Thank you in advance - Lisa xxxEND_PAGE:deq04_b104_3261_3262_1 Lisa Christ, Chief Targeting and Analysis Branch Office of Ground Water and Drinking Water USEPA 1200 Pennsylvania Ave NW Washington, DC 20460-0001 phone: 202.564.8354 fax: 202.564-3760 Mail Code: 4607M

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LCR Workgroup, Attached is a link to the recent (8/19/13) Singh et al. article in PNAS (Proceedings of the National Academy of Sciences) entitled, “Low levels of copper disrupt brain amyloid-B homeostasis by altering its production and clearance.” There have been several articles in the media covering this article. http://www. HESUP000026.topic> is found in a wide range of the foods we eat, including red meat, shellfish, nuts and many fruits and vegetables, as well as in many vitamin supplements. It also leaches from copper pipes into the water we drink. While we take in copper from foods, it is most readily absorbed into the bloodstream in its "free" form, say researchers -- when it is suspended in water.” “But even now, Deane said, consumers could be checking their vitamin supplements for copper and researching whether their water filters are equipped to remove copper from their drinking supply.” Nicole Shao US EPA, ORD-Office of Science Policy 1200 Pennsylvania Avenue, NW (8104R) Washington, DC 20460 (202) 564-6779 xxxEND_PAGE:deq04_b239_3511_3512_1 xxxEND_PAGE:deq04_b239_3511_3512_2