Michigan Adopts MCLs for Seven PFAS

In 2019 Michigan began a process to establish maximum contaminant levels (MCLs) for seven PFAS compounds.  Yesterday (July 22, 2020) the State issued a Press Release that the proposed MCLs have completed the regulatory process and the final MCLs are expected to become effective on August 3, 2020.

Link to Michigan Press Release and a table presenting the seven MCLs:


Here are the seven MCLs:

PFNA – 6 parts per trillion (ppt)

PFOA – 8 ppt

PFHxA – 400,000 ppt

PFOS – 16 ppt

PFHxS – 51 ppt

PFBS – 420 ppt

HFPO-DA – 370 ppt


In 2017 Michigan created MPART [Michigan PFAS Action Response Team] in response to PFAS contamination throughout the State.  MPART consists of members from the following State government departments: Environment, Great Lakes and Energy; Health and Human Services; Natural Resources; Agriculture and Rural Development; Transportation; Military and Veteran Affairs; and Licensing and Regulatory Affairs.

In March 2019, Governor Whitmer directed MPART to form a Science Advisory Workgroup that would “inform the rulemaking process for appropriate MCLs for PFAS.”   In June 2019 the three-member Science Advisory Workgroup recommended “health based” levels for the seven PFAS.  Three public hearings were held on the proposed MCLs in January 2020.

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About Dan Askenaizer

Dr. Askenaizer leads WQTS’ work on regulatory compliance support for many of our water agencies clients. Dr. Askenaizer tracks water quality and treatment regulations at the Federal and State levels and provides regulatory updates to our clients. Dr. Askenaizer has strong expertise in the development of Regulatory Monitoring and Compliance Plans (RMCPs), which he has completed for a number of water agencies. He has also been working on a number of projects dealing with the development of distribution system monitoring plans and review of nitrification control strategies. Prior to joining WQTS, Dr. Askenaizer was the Water Quality Manager for the Glendale Water and Power. Under his leadership, the Water Quality Group conducted a demonstration-scale study of chlorite for nitrification control and a pilot-scale study of biological treatment for removal of nitrate. Dan has 30 years of experience working on projects dealing with regulatory, water quality and public health issues. Dan has given numerous presentations at workshops and round-tables across the country for water utilities. Dan was instrumental in developing and implementing a Mentoring Program for water staff and was involved in a Sustainable Development team.