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.
Official Correspondence
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During routine compliance monitoring, one business located near US 131 and Mackinaw Trail in Clam Lake Township began to show elevated levels of PFAS in their drinking water. As of December 2024, this business exceeded Michigan drinking water criteria with a running annual average of 17 ppt PFOS (compared to 16 ppt). There is another business in the area that has also shown elevated levels of PFAS but has not exceeded the running annual average criteria. Because no clear source(s) could be identified, an investigation of the surrounding area began.
There are several aquifers in the area, and groundwater flow direction varies greatly depending on the aquifer. Lake Cadillac is located roughly one mile to the northwest.
Content posted December 2024.
See an aerial view of the location of the site.
EGLE, DHHS, and local health have evaluated nearby drinking water wells and have developed a sampling plan involving approximately 30 drinking water wells. Sampling is planned to begin in early 2025.
Due to the inconsistent groundwater flow direction, drinking water wells near the business with the exceedance will be sampled in early 2025.