Laserfiche WebLink
Page 11 <br />Chemicals soon to be regulated in drinking water in California <br />The information in the following table can be found in OEHHA’s website (California PHGs), 40 CFR §141.61 (U.S. EPA MCLs), <br />and 40 CFR §141.50 (U.S. EPA MCLGs). The values in this table are in units of nanograms per liter (ng/L) unless otherwise <br />stated. <br />Chemicals <br />California U.S. EPA <br />MCL DLR PHG PHG <br />Date MCL MCL Effective <br />Date MCLG <br />N-Nitrosodimethylamine (NDMA)----3 2006 ------ <br />Perfluorooctanoic acid (PFOA)----0.007 2024 4.0 2029-04-26 zero <br />Perfluorooctane sulfonic acid (PFOS)----1 2024 4.0 2029-04-26 zero <br />Perfluorohexane sulfonic acid (PFHxS)--------10.0 2029-04-26 10 <br />Perfluorononanoate (PFNA)--------10.0 2029-04-26 10 <br />2,3,3,3-Tetrafluoro-2- <br />(heptafluoropropoxy)propanoate (HFPO-DA or <br />GenX Chemicals) <br />--------10.0 2029-04-26 10 <br />PFAS Hazard Index13 <br />(includes HFPO-DA, PFBS14, PFHxS, and PFNA)--------1 (unitless)2029-04-26 1 (unitless) <br />13 PFAS Hazard Index = ([HFPO-DAwater ng/L]/[10 ng/L]) + ([PFBSwater ng/L]/[2000 ng/L]) + ([PFNAwater ng/L]/[10 ng/L]) + <br />([PFHxSwater ng/L]/[10 ng/L]) <br />14 Perfluorobutane sulfonate (PFBS) <br />9.B. - Page 27 of 27 <br />216