1. 95% of beer samples contained PFAS, linked to brewery water contamination.
2. Perfluorosulfonic acids, especially perfluorooctanesulfonic acid, were the most frequently detected.
3. Three beers exceeded the EPA's maximum contaminant level for perfluorooctanoic acid, and one exceeded the limit for perfluorooctanesulfonic acid.
4. Beers from areas with known PFAS contamination had 15 times the odds of PFAS detection compared to national or international beers.
5. International beers were less likely to contain detectable PFAS.
6. Strong positive correlations were found between beer PFAS concentrations and municipal water PFAS concentrations.
7. Study suggests the importance of advanced water filtration methods for breweries.

Source: Environmental Science & Technology