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PFAS Quiz - Hard

1 / 8

How have major PFAS levels among people living in the U.S. changed since the 2000s?

2 / 8

What is the difference between a maximum contaminant level (MCL) and a health advisory level (HAL)?

3 / 8

Believe it or not, scientists disagree on how to properly define the diverse class of PFAS. Which of the following is a reason why it’s complicated?

4 / 8

In 2022, a National Academies panel concluded that there is a higher risk for health problems when PFAS in blood is above what level?

5 / 8

True or False: PFOS and PFOA each have a proposed drinking water standard of 4 parts per trillion.

6 / 8

According to one EPA database, about how many PFAS are there?

7 / 8

What are EPA’s current health advisory levels for PFAS?

8 / 8

What are the two most common PFAS compounds in drinking water and in people’s bodies?

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