GenX
-
EPA Drops First Set of UCMR 5 Data
U.S. EPA released the first set of data collected by public water systems (PWS) pursuant to the Fifth Unregulated Contaminant Monitoring Rule (UCMR 5). UCMR 5 required PWS serving more than 10,000 customers to sample for 29 specific per- and polyfluoroalkyl substances (PFAS), including perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), and hexafluoropropylene oxide dimer… Continue reading
-
How Low Did U.S. EPA Go–U.S. EPA Issues Its Long-Awaited Draft PFAS Drinking Water Standards
Almost two years to the date after U.S. EPA issued its regulatory determination for contaminants on the forth Contaminant Candidate List, U.S. EPA has issued its draft rule setting drinking water limits for several PFAS compounds. Specifically. U.S. EPA’s draft rule proposes a four part per trillion (ppt) maximum contaminant level (MCL) for perfluorooctanoic acid (PFOA)… Continue reading
-
How Low Can You Go—U.S. EPA Attempts to Answer that Question With New PFAS Health Advisory Levels
U.S. EPA issued its long anticipated interim updated drinking water health advisories for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) that replace previous health advisories for these per- and polyfluoroalkyl substances (PFAS) that had been set at 70 parts per trillion (ppt). Continue reading