ECOS developed and annually updates this paper on how states develop PFAS standards, advisories, and guidance values.
Standards and Regulations
ECOS PFAS Monitoring Spreadsheet
Many states monitor for more PFAS than are actually regulated. This spreadsheet notates this data for participating states.
EPA Drinking Water Health Advisories for PFOA and PFOS
EPA issued interim updated drinking water health advisories for perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) that replace those EPA issued in 2016. The updated advisory levels, which are based on new science and consider lifetime exposure, indicate that some negative health effects may occur with concentrations of PFOA or PFOS in water that are near zero. These interim health advisories will remain in place until EPA establishes a National Primary Drinking Water Regulation.
CDC/ATSDR Minimum Risk Levels for PFOA, PFOS, PFHxS, PFNA
This webpage details ATSDR’s Minimal Risk Levels (MRLs), which are screening levels used to identify environmental exposures that might harm people’s health.
EPA Toxicity Assessments
EPA has developed toxicity assessments as part of the human health risk assessment process to summarize potential health effects associated with a chemical and exposure levels at which those health effects might occur. In 2022, EPA finalized human health toxicity assessments for PFBS and GenX Chemicals.
ASDWA White Paper: Lessons Learned from States and Challenges Ahead in Setting State-Level PFAS Standards
Focuses on how states are setting PFAS standards in drinking water
