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PFAS in U.S. Food Supply a Growing Concern, Study Finds

 

July 24, 2024 Health Conditions Toxic Exposures News

Toxic Exposures

PFAS in U.S. Food Supply a Growing Concern, Study Finds

Despite widespread alarm about the health and environmental impacts of toxic PFAS chemicals, they are increasingly being added to pesticides applied in homes and crops across the U.S., according to a published today in Environmental Health Perspectives.

letters "PFAS" with spinach and lettuce around it

By Shannon Kelleher 

Despite widespread alarm about the health and environmental impacts of toxic per- and polyfluoroalkyl substances (PFAS), the chemicals are increasingly being added to pesticides applied in homes and crops across the U.S., according to a new study.

The findings, published today in the journal Environmental Health Perspectives, add to growing concerns about PFAS contamination in the U.S. food system and waterways and highlight pesticides’ “underappreciated” role in the problem, said David Andrews, a senior scientist at the Environmental Working Group and an author of the study.

The study revealed that PFAS accounts for 14% of all active ingredients in pesticides used in the U.S., including almost one-third of active ingredients approved in the last decade.

Even when PFAS are not intentionally added to these products, the fluorinated containers in which they are stored have been found to leach PFAS into their contents, the study concluded.

“This is truly frightening news, because pesticides are some of the most widely dispersed pollutants in the world,” Nathan Donley, the environmental health science director at the Center for Biological Diversity and an author of the study, said in a statement.

“Lacing pesticides with forever chemicals is likely burdening the next generation with more chronic diseases and impossible cleanup responsibilities.”

The authors reviewed pesticide data from the U.S. Environmental Protection Agency (EPA), the U.S. Geological Survey and the Canadian Pest Management Regulatory Agency, as well as publicly available databases, finding that PFAS-laced pesticides are regularly used nationwide on staple crops including corn, wheat, kale, spinach, apples and strawberries.

PFAS are also common ingredients in flea treatments for pets and sprays to kill insects, they found.

The study comes on the heels of a petition delivered to the EPA on July 22 by the Center for Food Safety and other nonprofits asking the agency to ban PFAS in pesticides.

Regulatory concerns

PFAS have been used for decades in a wide variety of consumer products. Some of the so-called “forever chemicals” have been linked to cancers, damage to organs and the immune system and other health problems.

One of the same qualities that make PFAS concerning to environmental and health advocates — their resistance to breaking down — also makes them attractive to pesticide manufacturers because it makes their products last longer, said Andrews.

Even as the use of PFAS in pesticides has climbed since 2012, the EPA has granted nearly all requests to bypass a requirement to assess how active ingredients affect the immune system, a “troubling” pattern that suggests health effects from these chemicals in pesticides may not be accounted for, the authors write.

“The regulations surrounding pesticides are currently outdated and ineffective, so this discovery of PFAS presence in pesticide formulations represents a new opportunity for the EPA to improve the scientific validity of pesticide risk assessment to better capture real-world exposure scenarios,” scientists from Emory University who were not involved in the study wrote in a related perspective article.

In 2021, the EPA announced its PFAS Strategic Roadmap, which outlined a strategy for cleaning up PFAS contamination and curbing the further spread of the toxic chemicals into the environment.

This spring, the agency set enforceable limits for six PFAS chemicals in drinking water.

Earlier this month, in response to a petition from environmental groups, the EPA initiated a regulatory risk management process under the Toxic Substances Control Act to address concerns about PFAS leaching from fluorinated containers.

After testing 10 pesticide products for PFAS, the agency released a memo in May 2023 stating that it did not find any PFAS in the products.

The agency may have incorrectly reported some of these PFAS test results, alleges the watchdog group Public Employees for Environmental Responsibility, which said it obtained testing data through a Freedom of Information Act request that shows the EPA had actually found PFAS in the products it tested.

A spokesperson for the EPA said the agency is currently reviewing the new Environmental Health Perspectives study.

“EPA shares communities’ concerns regarding the potential risks posed by PFAS and the need for more data to better understand and address these risks in communities all across America,” said the EPA in an email.

“EPA is committed to addressing the risks from PFAS from all sources, including pesticides.”

Originally published by The New Lede.

Shannon Kelleher is a reporter for The New Lede.

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