Laboratories Offering Home Testing
PFAS MCLs and Drinking Water
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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Last updated: September 2026
Private residential wells are not regulated under the Michigan Safe Drinking Water Act, but Michigan uses the MCLs along with other factors when evaluating private residential well results.
If you want to collect your own drinking water sample, visit our Home Drinking Water Sampling Guidance page.