What EPA’s PFAS rollback means for contaminated Michigan drinking water

May 22, 2026

The Trump administration has announced plans to roll back most of the 2024 federal drinking water standards for PFAS chemicals, proposing to eliminate limits on four of six regulated compounds while allowing water utilities to delay compliance on the remaining two. Although Michigan maintains its own state-level PFAS standards established in 2020 that will remain in force, the federal rollback weakens protections since Michigan's limits for most of the affected compounds are significantly looser than the rescinded federal requirements. The EPA justifies the changes as correcting procedural flaws in the Biden-era rule and claims to be prioritizing science-based approaches, but environmental advocates argue the rollback is potentially illegal and will result in years of additional exposure to toxic chemicals for millions of Americans.

Who is affected

More than 200 million Americans whose drinking water is contaminated with PFAS
165 million people served by 9,323 PFAS-contaminated water systems nationwide
Michigan residents in communities including Grayling, Oscoda, and 59 areas across southeast Michigan (Oakland, Wayne, Macomb, Livingston, and Washtenaw counties)
15 public water systems in Michigan that matched or exceeded federal standards
Military service members and residents of military communities
Water utilities and public water systems required to comply with standards
Michigan residents on private wells

What action is being taken

The EPA is proposing two rules: one to rescind maximum contaminant levels for four PFAS compounds (PFHxS, PFNA, GenX, and the hazard index), and another to create a process for water systems to apply for two-year compliance extensions for PFOA and PFOS
Michigan's Department of Environment, Great Lakes, and Energy is maintaining the state's existing PFAS maximum contaminant levels established in 2020
Clean-ups at military sites are continuing under state standards
The EPA is providing nearly $1 billion in new grant funding for PFAS treatment

Why it matters

This rollback represents a significant weakening of public health protections against toxic "forever chemicals" linked to kidney cancer, bladder cancer, cardiovascular disease, preterm births, immune suppression in children, and liver and kidney damage. The rescinded federal standards were the first new drinking water contaminant limits set by the EPA in 27 years and were expected to reduce PFAS exposure for approximately 100 million people. While Michigan's state standards provide some protection, they are significantly weaker than the rescinded federal limits for most compounds, leaving communities contaminated with those specific chemicals—particularly PFHxS and GenX—with substantially reduced safeguards. The rollback also eliminates requirements for water systems to install filtration in communities where only the now-unregulated compounds are detected, and it undermines decades of progress in addressing cumulative exposure to PFAS mixtures through the eliminated hazard index.

What's next

The two proposed rules will be published in the Federal Register with a 60-day public comment period
The EPA will hold a public hearing on July 7, 2026
The EPA says it intends to reevaluate the four rescinded chemicals for regulation, but hasn't committed to a timeline
Michigan water systems will continue to need to meet federal limits for PFOA and PFOS, though possibly on a delayed timeline if extensions are approved
Water systems can apply for two-year extensions on PFOA and PFOS compliance once the process is established

Read full article from source: bridgedetroit.com