The Michigan Department of Environment, Great Lakes, and Energy (EGLE) announced Michigan will adopt a rule set creating some of the nation’s most comprehensive regulations limiting PFAS contamination in drinking water.
“All Michiganders deserve to know that we’re prioritizing their health and are continuing to work every day to protect the water coming out of their taps,” said Gov. Gretchen Whitmer. “Michigan is once again leading the way nationally in fighting PFAS contamination by setting our own science-based drinking water standard. As a result, we will be better protecting Michiganders across our state.”
The ruleset takes effect seven days after filing with the Secretary of State and is expected to become official Aug. 3, 2020. The new rules will provide drinking water standards for public water systems to achieve.
Michigan’s first-ever regulations limiting seven PFAS chemicals in drinking water will cover roughly 2,700 public water supplies around the state and exceed the current US Environmental Protection Agency (EPA) guidance on the chemicals.
In anticipation of these new rules, many public water supplies have already acted to reduce PFAS levels in their drinking water supply. MPART agencies like EGLE and MDHHS will assist public water systems to bring their water into compliance over the next several months.
Roughly 30 public water systems were found to have total PFAS results of 10 ppt or higher during MPART’s 2018 statewide sampling program and ongoing surveys.
Compliance with the new standards at those systems and others will be determined based on a running annual average of sample results.
Investigations near the public water systems with PFAS detection's will be prioritized for further assessment and sampling by EGLE to determine potential PFAS sources and any potential risk to both public and private drinking water.