Michigan Moving Forward with Draft MCLs for PFAS in Drinking Water

The Michigan PFAS Action Response Team (MPART) formally recommended to move forward with establishing draft maximum contaminant levels (MCLs) for PFAS compounds in drinking water. The recommendation was made by unanimous vote by MPART’s board on September 27, 2019 in Lansing.

The MPART board is recommending the following health-based MCLs for seven PFAS compounds:

  • PFOA: 8 ng/L (ppt)

  • PFOS: 16 ng/L (ppt)

  • PFNA: 6 ng/L (ppt)

  • PFHxS: 51 ng/L (ppt)

  • PFBS: 420 ng/L (ppt)

  • GenX: 370 ng/L (ppt)

  • PFHxA: 400 ug/L (ppb)

The establishment of enforceable MCLs for PFAS compounds will require compliance with the Safe Drinking Water Act (SDWA). When they are adopted, the PFAS drinking water MCLs would replace the current groundwater cleanup standard of 70 ppt for PFOA and PFOS. The administration is targeting to have the PFAS MCLs adopted by April 2020.

Merit is a leading PFAS environmental laboratory, analyzing drinking water, soil, wastewater, groundwater, and other sample matrices. Merit is certified for the analysis of PFAS by ISO/IEC 17025. Analytical method certification for PFAS includes drinking water by EPA 537 rev. 1.1 and wastewater, groundwater, and surface water by ASTM D7979 with Isotopic Dilution. Please contact Merit Laboratories for assistance on your PFAS testing needs.