The EPA’s January 2021 PFBS Toxicity Assessment Did Not Uphold the Agency’s Commitments to Scientific Integrity and Information Quality

Report No. 23-E-0013, March 7, 2023

The EPA did not follow the typical intra-agency review and clearance process during the development and publication of the January 2021 perfluorobutane sulfonic acid, or PFBS, toxicity assessment.

Report Materials

Podcast overview of this report (8:35)

• Report At a Glance (pdf) (298.95 KB) 
• Full Report (pdf) (1.6 MB) 
• Update: EPA Response to Report (pdf) (219.37 KB) 

• Update: IG Response (pdf) (196.89 KB) 

  ---

  This report relates to: Project No. SRE-FY21-0207