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A crop duster sprays fields near Pullman, Washington with pesticide.
(Photo by Wolfgang Kaehler/Avalon/Universal Images Group via Getty Images)
EPA Ripped for 'Routinely' Failing to Label Cancer-Causing Pesticides
"If the agency is going to allow such chemicals to be freely sold at Home Depot, Walmart, and farm supply stores, the very least the EPA must do is require a clear cancer warning on the label," said one critic.
Mar 30, 2026
The US Environmental Protection Agency has repeatedly failed to warn consumers of the cancer risks posed by pesticides—even when its own research has found those products to be carcinogenic, a pair of green groups said Monday.
The Center for Food Safety studied the EPA's permitted risk level in active components of both currently approved and legacy pesticides. CFS researchers found that the EPA allowed pesticides with a cancer risk "as high as 1 in every 100 people exposed, a far greater level than the EPA’s benchmark of a 1-in-a-million chance of developing cancer."
"Of the 570 unique pesticide chemicals that EPA’s Office of Pesticide program has classified for carcinogenic potential since 1985, over one-third (200, or 35%) are either possible human carcinogens (127) or likely to be carcinogenic to humans (73)," the CFS report notes. "The status of 62 others (11%) is uncertain, because EPA lacks sufficient data to make a determination.
A second report, from the Center for Biological Diversity (CBD), shows that of the 200 pesticides that are possible or likely human carcinogens, 125 are still registered for use.
CBD analyzed the labels of every pesticide currently approved by the EPA and found that the agency has placed cancer warnings on just 69 of 4,919 pesticide labels (1.4%) "containing an active ingredient that the agency has designated a 'likely' human carcinogen." Additionally, the EPA has put cancer warnings on just 242 of the 22,147 pesticide labels (1.1%) that "contain an ingredient the agency has designated as a 'possible' human carcinogen."
CFS science director Bill Freeses said in a statement Monday: “It’s bad enough that the EPA approves cancer-causing pesticides. But if the agency is going to allow such chemicals to be freely sold at Home Depot, Walmart, and farm supply stores, the very least the EPA must do is require a clear cancer warning on the label. Warnings save lives by incentivizing users to wear protective equipment that reduces risk."
Lori Ann Burd, director of environmental health at the CBD, said on Monday that “it's dumbfounding that the EPA has failed to require any cancer warning on thousands of pesticide products sold to the public that the agency itself has linked to cancer."
“Why should anyone have confidence in the EPA’s ability to keep tabs on the pesticide industry and protect us all from harmful poisons when it won’t even compel companies to put long-term health warnings on pesticides it knows are really dangerous?" she added.
Last month, CFS, CBD, and others denounced the EPA's reapproval of the pesticide dicamba—which scientific studies have linked to increased risk of cancer and hypothyroidism in high-dose exposure—for certain cotton and soybean crops.
The new CFS and CBD analyses come ahead of next month's oral arguments in Monsanto Company v. John L. Durnell, a case before the US Supreme Court in which Bayer, the Germany-based pharma giant that bought Monsanto in 2018, is seeking substantial immunity from future lawsuits filed by people in the United States who used glyphosate-based products like Roundup weedkiller and were then diagnosed with rare pesticide-linked cancers. The company has paid out billions of dollars to settle such suits.
CBD and other advocacy groups have also warned that the industry-backed Farm Bill currently advancing in the Republican-controlled Congress weakens or delays pesticide safety regulation, preempts state-level cancer warning rules, and shields chemical companies from lawsuits.
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us environmental protection agencycancercenter for food safetycenter for biological diversitypublic healthpesticides
The US Environmental Protection Agency has repeatedly failed to warn consumers of the cancer risks posed by pesticides—even when its own research has found those products to be carcinogenic, a pair of green groups said Monday.
The Center for Food Safety studied the EPA's permitted risk level in active components of both currently approved and legacy pesticides. CFS researchers found that the EPA allowed pesticides with a cancer risk "as high as 1 in every 100 people exposed, a far greater level than the EPA’s benchmark of a 1-in-a-million chance of developing cancer."
"Of the 570 unique pesticide chemicals that EPA’s Office of Pesticide program has classified for carcinogenic potential since 1985, over one-third (200, or 35%) are either possible human carcinogens (127) or likely to be carcinogenic to humans (73)," the CFS report notes. "The status of 62 others (11%) is uncertain, because EPA lacks sufficient data to make a determination.
A second report, from the Center for Biological Diversity (CBD), shows that of the 200 pesticides that are possible or likely human carcinogens, 125 are still registered for use.
CBD analyzed the labels of every pesticide currently approved by the EPA and found that the agency has placed cancer warnings on just 69 of 4,919 pesticide labels (1.4%) "containing an active ingredient that the agency has designated a 'likely' human carcinogen." Additionally, the EPA has put cancer warnings on just 242 of the 22,147 pesticide labels (1.1%) that "contain an ingredient the agency has designated as a 'possible' human carcinogen."
CFS science director Bill Freeses said in a statement Monday: “It’s bad enough that the EPA approves cancer-causing pesticides. But if the agency is going to allow such chemicals to be freely sold at Home Depot, Walmart, and farm supply stores, the very least the EPA must do is require a clear cancer warning on the label. Warnings save lives by incentivizing users to wear protective equipment that reduces risk."
Lori Ann Burd, director of environmental health at the CBD, said on Monday that “it's dumbfounding that the EPA has failed to require any cancer warning on thousands of pesticide products sold to the public that the agency itself has linked to cancer."
“Why should anyone have confidence in the EPA’s ability to keep tabs on the pesticide industry and protect us all from harmful poisons when it won’t even compel companies to put long-term health warnings on pesticides it knows are really dangerous?" she added.
Last month, CFS, CBD, and others denounced the EPA's reapproval of the pesticide dicamba—which scientific studies have linked to increased risk of cancer and hypothyroidism in high-dose exposure—for certain cotton and soybean crops.
The new CFS and CBD analyses come ahead of next month's oral arguments in Monsanto Company v. John L. Durnell, a case before the US Supreme Court in which Bayer, the Germany-based pharma giant that bought Monsanto in 2018, is seeking substantial immunity from future lawsuits filed by people in the United States who used glyphosate-based products like Roundup weedkiller and were then diagnosed with rare pesticide-linked cancers. The company has paid out billions of dollars to settle such suits.
CBD and other advocacy groups have also warned that the industry-backed Farm Bill currently advancing in the Republican-controlled Congress weakens or delays pesticide safety regulation, preempts state-level cancer warning rules, and shields chemical companies from lawsuits.
The US Environmental Protection Agency has repeatedly failed to warn consumers of the cancer risks posed by pesticides—even when its own research has found those products to be carcinogenic, a pair of green groups said Monday.
The Center for Food Safety studied the EPA's permitted risk level in active components of both currently approved and legacy pesticides. CFS researchers found that the EPA allowed pesticides with a cancer risk "as high as 1 in every 100 people exposed, a far greater level than the EPA’s benchmark of a 1-in-a-million chance of developing cancer."
"Of the 570 unique pesticide chemicals that EPA’s Office of Pesticide program has classified for carcinogenic potential since 1985, over one-third (200, or 35%) are either possible human carcinogens (127) or likely to be carcinogenic to humans (73)," the CFS report notes. "The status of 62 others (11%) is uncertain, because EPA lacks sufficient data to make a determination.
A second report, from the Center for Biological Diversity (CBD), shows that of the 200 pesticides that are possible or likely human carcinogens, 125 are still registered for use.
CBD analyzed the labels of every pesticide currently approved by the EPA and found that the agency has placed cancer warnings on just 69 of 4,919 pesticide labels (1.4%) "containing an active ingredient that the agency has designated a 'likely' human carcinogen." Additionally, the EPA has put cancer warnings on just 242 of the 22,147 pesticide labels (1.1%) that "contain an ingredient the agency has designated as a 'possible' human carcinogen."
CFS science director Bill Freeses said in a statement Monday: “It’s bad enough that the EPA approves cancer-causing pesticides. But if the agency is going to allow such chemicals to be freely sold at Home Depot, Walmart, and farm supply stores, the very least the EPA must do is require a clear cancer warning on the label. Warnings save lives by incentivizing users to wear protective equipment that reduces risk."
Lori Ann Burd, director of environmental health at the CBD, said on Monday that “it's dumbfounding that the EPA has failed to require any cancer warning on thousands of pesticide products sold to the public that the agency itself has linked to cancer."
“Why should anyone have confidence in the EPA’s ability to keep tabs on the pesticide industry and protect us all from harmful poisons when it won’t even compel companies to put long-term health warnings on pesticides it knows are really dangerous?" she added.
Last month, CFS, CBD, and others denounced the EPA's reapproval of the pesticide dicamba—which scientific studies have linked to increased risk of cancer and hypothyroidism in high-dose exposure—for certain cotton and soybean crops.
The new CFS and CBD analyses come ahead of next month's oral arguments in Monsanto Company v. John L. Durnell, a case before the US Supreme Court in which Bayer, the Germany-based pharma giant that bought Monsanto in 2018, is seeking substantial immunity from future lawsuits filed by people in the United States who used glyphosate-based products like Roundup weedkiller and were then diagnosed with rare pesticide-linked cancers. The company has paid out billions of dollars to settle such suits.
CBD and other advocacy groups have also warned that the industry-backed Farm Bill currently advancing in the Republican-controlled Congress weakens or delays pesticide safety regulation, preempts state-level cancer warning rules, and shields chemical companies from lawsuits.
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