Incorrect.

It’s true.

Incorrect.

One debate in the PFAS world is whether certain pharmaceuticals should be considered PFAS or not. Certain medicinal compounds have similar carbon-fluorine parts that do not break down easily.

All definitions of PFAS include PFOA and PFOS. The other two answers are incorrect.

Incorrect.

It’s the Faroe Islands.

Much of this work has been led by researcher Dr. Philippe Grandjean.

Incorrect.

PFAS levels have decreased in the general population since the 2000s. This is partly because of the phase-out of PFAS. More and more actions to decrease the general population’s exposure to PFAS have led to these results, too!

Incorrect.

Firefighters can be exposed to PFAS when using PFAS-containing firefighting foams. These are special foams used for putting out fuel fires. They can also be exposed from their turnout gear, which is treated with PFAS to make it water-resistant.

Incorrect.

EPA’s CompTox database currently identifies over 12,000 compounds as PFAS. You can sometimes see the count as “>4700” or “>9000.”

Incorrect.

A maximum contaminant level, or MCL, is an enforceable water standard. A health advisory level, or HAL, is not technically a standard. It's an non-enforceable level recommended by the Environmental Protection Agency or others. In March 2023, EPA proposed a PFAS MCL, which are expected to come into effect by the end of 2023.

Incorrect.

It’s 20 ng/ml.

This is a blood risk level established by the National Academies of Sciences, Engineering, and Medicine in 2022. On this site’s What’s My Exposure tool, we use this as a benchmark to help people know how their blood levels compare to this risk level.