What is the difference between an interim and final health advisory level?

According to the EPA, the agency issues an interim health advisory when a contaminant's associated health effects assessment is in draft form, but there is a pressing need to provide information to public health officials prior to finalization of the health effects assessment. The PFOA and PFOS interim health advisories are intended to be in place during the time interval between initial understanding of health effects and publication of the final health advisory, maximum contaminant level goal (MCLG), and/or maximum contaminant level (MCL). Final health advisories are based on final health effects assessments.

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1. What is PFAS?
2. What are the health advisory levels for PFAS compounds?
3. What is the difference between an interim and final health advisory level?
4. Will EPA release an enforceable regulation for GenX in drinking water?
5. How do I know if my drinking water contains PFAS?
6. PFAS (PFOA, PFOS, GenX, PFBS) has been detected in my water. Is it safe to drink?
7. PFAS (PFOA, PFOS, GenX, PFBS) has been detected in my water supply. Can I shower, bathe, wash clothes/dishes, water my plants, etc.?
8. Can I use my water to mix my babies’ formula?
9. PFAS (PFOA, PFOS, GenX, PFBS) has been detected in my water supply. Is it safe for pets or animals?
10. What health effects should I be worried about?
11. How can I be exposed to PFAS?
12. What can I do to reduce my exposures to PFAS?
13. Is there one location where PFAS studies are summarized?