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American Focus > Blog > Tech and Science > ‘Forever Chemicals’ Found in Popular US Beers, Above EPA Limits : ScienceAlert
Tech and Science

‘Forever Chemicals’ Found in Popular US Beers, Above EPA Limits : ScienceAlert

Last updated: May 23, 2025 11:35 am
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‘Forever Chemicals’ Found in Popular US Beers, Above EPA Limits : ScienceAlert
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Beer Contamination: The Presence of PFAS in Your Favorite Beverage

Beer is a beloved beverage enjoyed by people worldwide, with consumption reaching staggering levels of over 187.9 million kiloliters (49.6 billion gallons) in a single year. However, recent research has shed light on a concerning issue – the presence of PFAS (polyfluoroalkyl substances), also known as ‘forever chemicals’, in beer.

PFAS are notorious for their resistance to breaking down in the environment, with approximately 12,000 different types of these chemicals identified. While the health effects of PFAS are still largely unknown, certain types like PFOA (perfluorooctanoic acid) and PFOS (perfluorooctanesulfonic acid) have been linked to adverse health outcomes, including an increased risk of cancer and birth defects.

A team of scientists from the US nonprofit Research Triangle Institute utilized methods endorsed by the Environmental Protection Agency to investigate how PFAS infiltrates beer and at what concentrations. Their findings revealed alarming levels of PFAS in beer, surpassing the maximum limits set by the EPA.

Despite breweries having water filtration systems, these may not be equipped to eliminate PFAS. Given that up to seven liters of water are used to produce one liter of beer, any PFAS contaminants present in the water source are likely to remain in the final product.

The team conducted a study in 2021, purchasing 23 different types of beer from a North Carolina liquor store. The analysis showed that nearly every can tested positive for at least one PFAS, with most containing PFOS. Some beers exceeded the EPA’s limits for PFOA and PFOS concentrations.

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Stacked barplots showing averaged replicate concentrations for PFAS identified inanonymized beers. only two have no pfas, while others have various quantities of different kinds.
Averaged replicate concentrations (average of 5 samples per beer; ppt) for PFAS identified in anonymized beers. (Hoponick Redmon et al., Environ. Sci. Technol., 2025)

The study highlighted the correlation between PFAS levels in beer and the types and concentrations found in local drinking water sources used during brewing. Beers brewed in areas with higher PFAS in the water supply exhibited elevated PFAS levels, indicating that drinking water serves as a primary route of contamination for beer.

While international beers showed lower instances of detectable PFAS, beers from North Carolina, California, and Michigan demonstrated heightened PFAS detections and concentrations. This underscores the need for breweries to address PFAS removal from their water sources and emphasizes the importance of policies to restrict PFAS contamination.

The implications of this research are significant, urging the beer industry to take proactive measures in safeguarding consumer health. By raising awareness about PFAS contamination in beer and advocating for stricter regulations, we can strive towards a safer and more transparent brewing process.

This insightful study was published in Environmental Science & Technology, offering valuable insights into the presence of PFAS in beer and the critical need for intervention.

TAGGED:BeersChemicalsEPAlimitsPopularScienceAlert
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