Laboratories Offering Home Testing
PFAS MCLs and Drinking Water
Statewide Testing Initiative
PFAS Sites and Areas of Interest
There are two major classes of firefighting foam: Class A and Class B. Class B is also called Aqueous film forming foam (AFFF) and is usually created using PFAS. It is a highly effective foam used for fighting high-hazard flammable liquid fires, like gasoline, oil, and jet fuel.
Wastewater Treatment Plants / Industrial Pretreatment Program
Official Correspondence
Search is currently unavailable. Please try again later.
The web Browser you are currently using is unsupported, and some features of this site may not work as intended. Please update to a modern browser such as Chrome, Firefox or Edge to experience all features Michigan.gov has to offer.
November 06, 2023
With hunting season underway, the Michigan departments of Health and Human Services (MDHHS) and Natural Resources (MDNR) are reminding hunters not to eat venison from deer taken within three miles of Clark’s Marsh in Oscoda Township in Iosco County.
A Do Not Eat deer advisory remains in effect due to evidence that deer within three miles of the marsh were more likely to have various per- and polyfluorinated substances (PFAS), including perfluorooctane sulfonic acid (PFOS), in their livers and muscle tissue. The finding is included in the 2021 report PFAS levels in Michigan deer from the Oscoda area, Iosco County.
In addition, a Do Not Eat advisory for all fish and aquatic or semi-aquatic wildlife taken from Clark’s Marsh remains in place. This includes fish, aquatic and semi-aquatic mammals (including muskrats), amphibians (including frogs), mollusks (including snails), reptiles (including turtles), and arthropods (including crayfish).
PFOS are associated with several negative health effects, such as liver damage, high cholesterol and reduced fertility. The advisories for Clark’s Marsh are meant to protect the health of Michiganders.
There are three separate health advisories currently in effect for Clark’s Marsh:
To see the boundaries of the Do Not Eat deer advisory, see a map of the Do Not Eat deer advisory area.
MDHHS continues to recommend people do not eat organs from any fish, deer or other wild game in the state because many chemicals, including PFAS, can accumulate in the organs of wildlife.
For more information about PFAS, visit Michigan.gov/PFASResponse.
For more information about fish and wild game consumption, visit Michigan.gov/EatSafeGame.
Media Contact:
Personnel from the ARNG along with representatives from local and state health departments visited Grayling on August 20 to distribute notification letters of test results along with bottled water to homes that have been found to exceed the new MCL.
Personnel from the ARNG along with representatives from local and state health departments will be in Grayling July 23 - 25 to distribute notification letters of test results along with bottled water to homes that have been found to exceed the new MCL.
With summer approaching, the Michigan Department of Health and Human Services (MDHHS) recommends residents and visitors avoid foam on Michigan waterbodies such as lakes, rivers and streams. Foam can form on any waterbody. Natural foam is usually off-white and/or brown, can have an earthy or fishy scent, and tends to pile up in bays, eddies or at river barriers, such as dams.