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Per- and polyfluoroalkyl substances (also PFAS [1],PFASs, [2] and sometimes referred to as "forever chemicals" [3] [4]) are a group of synthetic organofluorine chemical compounds that have multiple fluorine atoms attached to an alkyl chain; there are 7 million such chemicals according to PubChem. [5]
The U.S. Department of Defense's research programs have been trying to define nature and extent of PFAS contamination at U.S. military sites, especially in groundwater. [ 7 ] A 2018 report to Congress indicated that "at least 126 drinking water systems on or near military bases" were contaminated with PFAS compounds.
A number of jurisdictions have guidelines or limits for the concentration of PFHxS in water, in diets, and in the environment. There are fewer regulations on PFHxS compared to PFOS and PFOA. This reflects the relative lack of epidemiological and toxicological information on the human health effects of exposure to PFHxS.
Aug. 30—Tears in a retention pond lining at Cannon Air Force Base near Clovis were discovered this month following a July leak of water contaminated with PFAS. Drinking water wells at the base ...
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Perfluorooctanesulfonic acid (PFOS) (conjugate base perfluorooctanesulfonate) is a chemical compound having an eight-carbon fluorocarbon chain and a sulfonic acid functional group, and thus it is a perfluorosulfonic acid and a perfluoroalkyl substance (PFAS).
Those include the Holloman and Cannon Air Force bases and an Army National Guard site in the Santa Fe area. Much less attention has been given to how PFAS affects wildlife and ecosystems.
March 2010 The Michigan Department of Environmental Quality (MDEQ) found PFAS contamination at the former Wurtsmith Air Force Base (WAFB) after sampling a former fire training area on the base. Finding a mean concentration of 5,099 ppt of PFOS and 1,309 ppt of PFOA in Clark's Marsh in Oscoda, Michigan nearby WAFB. [ 65 ]