Michigan Sets New PFAS Health Screening Levels for Drinking Water

The State of Michigan has lowered the drinking water health screening levels for PFAS. These new levels replace the federal advisory guidelines of a combined 70 ppt for PFOA and PFOS that the state had been using since January 2018.

The new drinking water screening levels in Michigan are:

• PFOA: 9 ppt

• PFOS: 8 ppt

• PFNA: 9 ppt

• PFHxS: 84 ppt

• PFBS: 1,000 ppt

These levels will be used by the state until the establishment of enforceable MCLs. 

As part of the MCL road map, the Michigan PFAS Action Response Team (MPART) formed a science advisory workgroup to review health-based drinking water standards to support the rulemaking process and make recommendations by July 1. The governor has called for completion of the proposed drinking water regulations by October 1, 2019.  The establishment of enforceable MCLs for PFAS compounds will require compliance with the Safe Drinking Water Act (SDWA).

Merit is Michigan’s PFAS environmental laboratory, analyzing soil, wastewater, groundwater, drinking water, and other sample matrices at our laboratory in East Lansing, Michigan. 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 | surface water by ASTM D7979 with Isotopic Dilution. Please contact Merit Laboratories for assistance on your PFAS testing needs.