Claim:
The EPA under U.S. President Donald Trump cleared the pesticide trifludimoxazin for use, despite it being identified as a known carcinogen and a persistent PFAS “forever chemical.”
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<p class="fact_check_info_description">The EPA categorized trifludimoxazin as showing "suggestive evidence of carcinogenic potential." This indicates that while data raises concerns about potential cancer risks, it is insufficient to confirm it definitively. Furthermore, while the EPA's specific criteria do not classify trifludimoxazin as a PFAS, it does meet the definition established by the international Organization for Economic Cooperation and Development.</p>
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<p>Social media users began circulating claims in late summer 2026 alleging that the Trump administration’s Environmental Protection Agency greenlit a pesticide that functions as a "forever chemical" (PFAS) and causes cancer. <span class="example">Perfluoroalkyl and polyfluoroalkyl substances, commonly known as PFAS</span><span>,</span> are synthetic chemicals recognized by the <a href="https://www.epa.gov/pfas/pfas-explained">Environmental Protection Agency</a> for lingering indefinitely in the environment and building up within ecosystems, wildlife, and human tissue, often posing adverse health risks.</p>
<p>Viral posts—such as <a href="https://www.facebook.com/CollectiveEvolutionPage/posts/pfbid0QPzxmeupWpQ58NrP16i8V4RQdV4UKRkHSW7SFR22CgEiXS7qpBNK2jXQTLf3Suz8l">one shared on Facebook</a> (<a href="https://perma.cc/4WG7-P6PS?type=image">archived</a>)—stated that the EPA authorized a "carcinogenic herbicide called trifludimoxazin" for application on major agricultural commodities like corn, wheat, oats, soybeans, peanuts, citrus, apples, and tree nuts. According to these online reports, environmental advocacy groups view the substance as a PFAS "forever chemical" and have initiated legal challenges against the decision.</p>
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<p>The U.S. EPA just approved a carcinogenic herbicide called trifludimoxazin for agricultural use on a wide range of crops, including corn, wheat, oats, soybeans, peanuts, citrus fruits (including oranges), apples, and tree nuts such as almonds.</p>
<p>Trifludimoxazin is also considered by many environmental groups to be a PFAS pesticide because it contains highly fluorinated chemical structures and can break down into persistent fluorinated compounds - i.e. nature can't break it down properly as it's synthetic. Environmental organizations have described it as a "forever chemical" and have filed lawsuits challenging the EPA's approval.</p>
<p>Environmental groups have also pointed out that the company's own studies showed evidence suggesting cancer concerns and that the EPA downplayed those findings when it was approved. The EPA claims the product is safe and that people shouldn't be concerned.</p>
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<p>Similar warnings surfaced across <a href="https://www.facebook.com/briantylercohen/posts/pfbid0ryB2LwNTWELgWWwLKF1oMrzJz29qEVA7NCqsxqx4f57D2qYfgvKYHRSXwgZ7ecSBl">Facebook</a> (<a href="https://perma.cc/36NS-J5HB?type=standard">archived</a>), <a href="https://www.facebook.com/JoshTheProgressive/posts/pfbid031tPfqYtvq3gSgdiXaYsMNFHyeNm8ajhyGNNuqXYcrHTb7S55ebjs2YtJcc3rLVPwl">other platforms</a> (<a href="https://perma.cc/72RC-6C4W?type=image">archived</a>), <a href="https://x.com/HQNewsNow/status/2094456526249357789">X</a> (<a href="https://perma.cc/Q65E-XW25">archived</a>), and <a href="https://www.reddit.com/r/clevercomebacks/comments/1w3kt9r/nothing_says_maga_like_poisoning_the_food_supply/">Reddit</a> (<a href="https://perma.cc/MB7K-ZS6Q">archived</a>), prompting readers to question the validity of the rumors.</p>
<p>Records show the Trump administration's EPA <a href="https://www.epa.gov/pesticides/epa-announces-proposed-registration-pesticide-trifludimoxazin">initially proposed</a> approving trifludimoxazin in June 2025 before finalizing the <a href="https://www.regulations.gov/document/EPA-HQ-OPP-2022-0649-0042">authorization</a> in June 2026. While scientific evaluations have uncovered indicators that the chemical might pose cancer risks, it falls short of being classified definitively as a "known carcinogen." Additionally, while the compound meets the broader PFAS criteria set by the intergovernmental Organization for Economic Cooperation and Development, it does not fit the EPA's narrower definition. Therefore, the core assertions are rated mostly true.</p>
<p>Trifludimoxazin operates as an herbicide designed to eradicate specific broad-leaf weeds and grasses across farming environments, including cereal grains, legumes, soybeans, orchards, and groves, based on <a href="https://www.regulations.gov/document/EPA-HQ-OPP-2022-0649-0016">EPA documentation</a>.</p>
<p>Efforts to clear the chemical are not entirely new. The EPA previously authorized products containing trifludimoxazin in 2021 during the Biden administration, though <a href="https://www.centerforfoodsafety.org/press-releases/6416/groups-sue-epa-over-approval-of-toxic-herbicide-citing-risks-to-endangered-species-drift-harms">legal challenges</a> from conservation groups successfully paused the action. Subsequent <a href="https://www.epa.gov/newsreleases/epa-announces-endangered-species-act-protection-policy-new-pesticides">regulatory updates</a> mandated stricter environmental reviews for new chemicals, leading the manufacturer to <a href="https://www.centerforfoodsafety.org/files/motion-to-hold-in-abeyance_55341.pdf">withdraw its application</a> at the time. Environmental coalitions have since launched <a href="https://biologicaldiversity.org/campaigns/pesticides_reduction/pdfs/2028-08-28%20Dkt%201.1%20-%20Petition%20for%20Review.pdf">fresh lawsuits</a> to block the recent approval.</p>
<h2>Potential Carcinogen</h2>
<p>Agency evaluations identified indicators pointing toward possible carcinogenic activity tied to trifludimoxazin, though existing data remains inconclusive.</p>
<p>During chronic dietary exposure trials involving rats, reviewers noted "suggestive evidence of carcinogenic potential." The EPA explains that <a href="https://www.epa.gov/pesticide-science-and-assessing-pesticide-risks/evaluating-pesticides-carcinogenic-potential#:~:text=Suggestive%20evidence%20of%20carcinogenic%20potential.">this designation</a> flags signals of potential human cancer risks while acknowledging that available information lacks the robustness required for a definitive verdict.</p>
<p>Conversely, the <a href="https://sitem.herts.ac.uk/aeru/ppdb/en/Reports/3282.htm#none">pesticide properties database</a> maintained by the University of Hertfordshire in the U.K. lists the substance as known not to present a carcinogenic problem, though it points to potential liver toxicity without signaling severe broader health hazards.</p>
<h2>Forever Chemical Classification</h2>
<p>Discussions surrounding PFAS definitions involve <a href="https://pubs.rsc.org/dd/article/1/4/490/311441/Extraction-of-chemical-structures-from-literature">at least three distinct standards</a>, as outlined in a 2022 study published in the journal *Digital Discovery*. These include an internationally recognized framework from the Organization for Economic Cooperation and Development (OECD), a restricted definition enforced by the EPA, and a hybrid alternative.</p>
<p>Data from <a href="https://pubchem.ncbi.nlm.nih.gov/compound/Trifludimoxazin#section=PFAS-and-Fluorinated-Organic-Compounds-in-PubChem&fullscreen=true">PubChem</a> indicates that trifludimoxazin aligns with the OECD's expansive criteria, even though it bypasses the parameters of the <a href="https://www.epa.gov/assessing-and-managing-chemicals-under-tsca/tsca-section-8a7-reporting-and-recordkeeping">EPA's 2023 classification guidelines</a>. The University of Hertfordshire database similarly categorizes the substance as a PFAS.</p>
<h2>Global Approval Status</h2>
<p>While the University of Hertfordshire database shows that trifludimoxazin lacks clearance for agricultural use in the United Kingdom and the broader European Union, individual EU member nations have authorized it separately. It has also received regulatory approval in <a href="https://www.canada.ca/en/health-canada/services/consumer-product-safety/reports-publications/pesticides-pest-management/decisions-updates/registration-decision/2021/trifludimoxazin-vulcarus-voraxor.html">Canada</a>.</p>