EPA Proposes Approving Fifth ‘Forever Chemical’ Pesticide
November 5, 2025 – In line with its plan to continue pesticide approvals despite the government shutdown, the Environmental Protection Agency (EPA) announced this week that it will register a new weedkiller for use in corn, soybean, wheat, and canola fields. The herbicide, epyrifenacil, is the fifth pesticide set to be approved by the agency within the last few months that fits into the group of chemicals called PFAS (per- and polyfluoroalkyl substances), based on a commonly used definition. And the agency is moving fast. The first pesticide was proposed for registration in April; that pesticide, called cyclobutrifluram, was finalized today. PFAS are linked to a wide range of health harms and are commonly called “forever chemicals” because they don’t break down easily and they accumulate in soil and water. In 2023, however, the EPA officially adopted a narrower definition. With the proposed approval of epyrifenacil, the agency for the first time has waded into the debate over which pesticides are PFAS and whether concerns voiced over other recent registrations of similar pesticides are warranted. In its announcement, the agency noted that epyrifenacil “contains a fluorinated carbon” and directed the public to a new website where it lays out its position on pesticides that contain fluorinated carbons. Whether those chemicals fit the definition of PFAS doesn’t matter, the agency argues, because under the law, the EPA evaluates the risks of each chemical individually. “Regardless of whether a chemical meets a specific structural definition or is part of a category or class of chemicals, the Agency utilizes a comprehensive assessment process under [the Federal Insecticide, Fungicide, and Rodenticide Act] to evaluate the potential risks of pesticide use,” it said. “This robust, chemical-specific process considers both hazard and exposure in determining whether the pesticide under review may pose risk to human health or the environment.” Epyrifenacil was developed by Japan-based Sumitomo Chemical, which owns Valent U.S.A. in the U.S. It’s one of a new class of herbicides designed to help farmers kill weeds that have developed resistance to popular chemicals like glyphosate. It’s also specifically designed for farmers to spray on cover crops and in no-till systems to prep fields for planting. The pesticide industry has lobbied in recent years to get the EPA to approve new chemicals to address what it calls an “innovation backlog.” Nathan Donley, environmental health science director at the Center for Biological Diversity, said in a statement that an “office run by chemical lobbyists” is whitewashing what is already known about the risks of PFAS. “Not only did the pesticide industry get a proposed approval of its dangerous new product,” he said, “but it also got a shiny new government website parroting its misleading talking points.” (Link to this post.) The post EPA Proposes Approving Fifth ‘Forever Chemical’ Pesticide appeared first on Civil Eats.
November 5, 2025 – In line with its plan to continue pesticide approvals despite the government shutdown, the Environmental Protection Agency (EPA) announced this week that it will register a new weedkiller for use in corn, soybean, wheat, and canola fields. The herbicide, epyrifenacil, is the fifth pesticide set to be approved by the agency […] The post EPA Proposes Approving Fifth ‘Forever Chemical’ Pesticide appeared first on Civil Eats.
November 5, 2025 – In line with its plan to continue pesticide approvals despite the government shutdown, the Environmental Protection Agency (EPA) announced this week that it will register a new weedkiller for use in corn, soybean, wheat, and canola fields.
The herbicide, epyrifenacil, is the fifth pesticide set to be approved by the agency within the last few months that fits into the group of chemicals called PFAS (per- and polyfluoroalkyl substances), based on a commonly used definition. And the agency is moving fast. The first pesticide was proposed for registration in April; that pesticide, called cyclobutrifluram, was finalized today.
PFAS are linked to a wide range of health harms and are commonly called “forever chemicals” because they don’t break down easily and they accumulate in soil and water.
In 2023, however, the EPA officially adopted a narrower definition. With the proposed approval of epyrifenacil, the agency for the first time has waded into the debate over which pesticides are PFAS and whether concerns voiced over other recent registrations of similar pesticides are warranted.
In its announcement, the agency noted that epyrifenacil “contains a fluorinated carbon” and directed the public to a new website where it lays out its position on pesticides that contain fluorinated carbons. Whether those chemicals fit the definition of PFAS doesn’t matter, the agency argues, because under the law, the EPA evaluates the risks of each chemical individually.
“Regardless of whether a chemical meets a specific structural definition or is part of a category or class of chemicals, the Agency utilizes a comprehensive assessment process under [the Federal Insecticide, Fungicide, and Rodenticide Act] to evaluate the potential risks of pesticide use,” it said. “This robust, chemical-specific process considers both hazard and exposure in determining whether the pesticide under review may pose risk to human health or the environment.”
Epyrifenacil was developed by Japan-based Sumitomo Chemical, which owns Valent U.S.A. in the U.S. It’s one of a new class of herbicides designed to help farmers kill weeds that have developed resistance to popular chemicals like glyphosate. It’s also specifically designed for farmers to spray on cover crops and in no-till systems to prep fields for planting. The pesticide industry has lobbied in recent years to get the EPA to approve new chemicals to address what it calls an “innovation backlog.”
Nathan Donley, environmental health science director at the Center for Biological Diversity, said in a statement that an “office run by chemical lobbyists” is whitewashing what is already known about the risks of PFAS. “Not only did the pesticide industry get a proposed approval of its dangerous new product,” he said, “but it also got a shiny new government website parroting its misleading talking points.” (Link to this post.)
The post EPA Proposes Approving Fifth ‘Forever Chemical’ Pesticide appeared first on Civil Eats.
