
Green beans are among the most pesticide-contaminated produce, with some samples containing residues of pesticides that have been banned for over a decade. A study by Consumer Reports found that 4% of green beans tested positive for acephate or methamidophos, a breakdown product of acephate. Another study found that more than 70% of green bean samples had at least two pesticides, with a combined 84 different pesticides found on the entire crop. Other beans, such as pinto beans and chickpeas, have also been found to contain high levels of pesticides, particularly glyphosate, which is the most widely used pesticide in the US.
| Characteristics | Values |
|---|---|
| Beans with the most pesticide contamination | Green beans, dried beans, chickpeas, lentils, and pinto beans |
| Pesticides found in green beans | Acephate, methamidophos, pyraclostrobin, cyfluthrin, organophosphates, and more |
| Potential health risks of pesticides in green beans | Serious health risks, carcinogens, hormone disruption, neurotoxicity, reproductive toxicity, seizures, respiratory depression, loss of consciousness |
| Organizations involved in pesticide regulation | EPA, USDA, FDA, EWG, NLM |
| Recommendations to reduce pesticide exposure | Buy organic, rinse produce, refer to Clean Fifteen/Dirty Dozen lists |
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What You'll Learn

Green beans are contaminated with banned pesticides
Green beans have been found to be contaminated with banned pesticides, raising concerns about the potential health risks associated with their consumption. Pesticides are designed to kill living organisms and pests, and while they help minimize crop damage and improve yields for farmers, their use has come under scrutiny due to the potential dangers they pose to human health and the environment.
Recent studies have identified green beans as one of the most pesticide-contaminated produce items. The Environmental Working Group added blueberries and green beans to its "Dirty Dozen" list, which includes non-organic or conventionally grown fruits and vegetables with the highest amounts of pesticides. Testing revealed evidence of pesticides banned in the United States, highlighting a concerning trend in the produce industry.
Green bean samples showed alarming results, with more than 70% of samples containing at least two pesticides and a total of 84 different pesticides detected across the entire crop. Notably, 6% of green bean samples contained residues of acephate, a pesticide banned for use on green beans since 2011. Acephate can break down into a neurotoxin called methamidophos, which was completely banned in 2009 due to health risks. Other samples exhibited traces of pesticides prohibited in Europe but still permitted in the United States, underscoring the urgency of addressing this issue.
The presence of banned pesticides in green beans is a significant concern due to their potential impact on human health. Pesticides have been linked to various health issues, including cancer, hormone disruption, and nervous system toxicity. Children, with their developing brains and physiological systems, are especially vulnerable to the harmful effects of pesticides. Additionally, agricultural workers who handle contaminated produce are at an elevated risk of exposure, as evidenced by studies indicating a higher susceptibility to illnesses related to toxic chemical and pesticide exposure.
To address this issue, consumers are encouraged to opt for organic produce whenever possible. Organic growers successfully cultivate crops without relying on the same pesticides used in conventional farming. While organic food may still contain pesticides, they are generally considered lower-risk options. Additionally, consumers can refer to resources like the EWG's Clean Fifteen List, which identifies produce with the lowest levels of pesticide residue. By making informed choices and advocating for stricter regulations on pesticide use, we can work towards reducing the presence of banned pesticides in our food supply.
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Blueberries are contaminated with phosmet
Several fruits and vegetables are contaminated with pesticides, with blueberries and green beans being among the most contaminated. While pesticides help improve yields for farmers, they are designed to kill pests and can have harmful effects on human health and the environment.
Green beans are also highly contaminated with pesticides, with more than 70% of samples containing at least two pesticides and up to 84 different pesticides found on the entire crop. Acephate, a banned pesticide, was found on 6% of green bean samples and can break down into a neurotoxin known as methamidophos, which has also been banned. Other samples showed traces of pesticides banned in Europe but still allowed in the US.
The presence of pesticides in produce is a concerning issue, as it poses potential health risks to consumers, farmers, and agricultural workers. While the EPA sets tolerance levels for pesticide residues in food, some argue that these thresholds may be too high. To reduce exposure to pesticides, consumers can refer to guides such as EWG's Clean Fifteen List, which features conventionally grown produce with low or no traces of pesticides. Additionally, organic fruits and vegetables are generally considered a better option compared to conventionally grown food.
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Cilantro is contaminated with DCPA
DCPA is often used to kill weeds, but it can persist in the soil for long periods, contaminating crops that are subsequently grown in those fields. Cilantro, in particular, has been found to have a similar pesticide profile to spinach and kale, with DCPA being the most frequently detected pesticide on these leafy greens. In 2019, the Department of Agriculture found DCPA in nearly 60% of kale samples, and it was also detected on many collard and mustard green samples.
The contamination of cilantro with DCPA is concerning, as herbs are not as widely tested for pesticides as other fruits and vegetables. Consumers who wish to avoid pesticides can opt for organic versions of fruits and vegetables or refer to the EWG's Clean Fifteen List, which features produce with the lowest levels of pesticide residue. While rinsing produce may not eliminate all traces of pesticides, it can significantly reduce them.
In addition to DCPA, other pesticides detected on cilantro include chlorpyrifos and pyrethroid insecticides. These pesticides have been found in wheat flour and rice samples, and their metabolites have been detected in the urine of children who consume pasta, rice, and cereal. While cilantro may be contaminated with pesticides, it is important to note that pesticides are not limited to this herb or even to produce. Pesticide contamination is a pervasive issue in our food supply, with glyphosate, for example, being detected in over 95% of conventional oat-based product samples.
Overall, the presence of DCPA on cilantro highlights the need for stricter regulation of pesticides in our food supply and the importance of consumer awareness when it comes to choosing produce with lower pesticide residues.
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Wheat and rice are contaminated with chlorpyrifos
Green beans, blueberries, and strawberries are among the most pesticide-contaminated produce. Green beans, in particular, have been found to contain residues of pesticides that have been banned for over a decade. While pesticide levels in some produce may fall within EPA limits, there is concern that these thresholds are too high.
Now, to address the statement: Wheat and rice are contaminated with chlorpyrifos.
Chlorpyrifos is an organophosphate insecticide widely used in agriculture to kill a variety of agricultural pests. It is considered toxic, especially to children, and has been linked to neurodevelopmental harms, reduced IQ, attention deficit disorders, and other health issues. In 2021, the US Environmental Protection Agency (EPA) banned chlorpyrifos from being used on food crops, but this ban was short-lived due to legal challenges from chemical manufacturers and agrobusinesses.
Wheat is one of the crops that has historically been treated with chlorpyrifos. In 2025, the EPA identified 11 specific crops whose tolerances for chlorpyrifos could be modified, and wheat (both spring and winter varieties) was included in this list. This means that while chlorpyrifos use on wheat is not completely revoked, there are now additional restrictions in place regarding its application.
Rice is also impacted by chlorpyrifos contamination. Studies in China have detected chlorpyrifos residues on rice crops, and assessed the potential dietary risks to consumers. These studies found that chronic exposure to low doses of chlorpyrifos can lead to adverse effects in mammals, including birth defects, nervous system disorders, and immune system imbalances. The Chinese government has banned several highly poisonous organophosphorus pesticides, but chlorpyrifos continues to be widely used in agricultural production.
The presence of chlorpyrifos on wheat and rice crops is a concern due to the potential health risks associated with consuming these contaminated foods, especially for vulnerable populations such as children and farmworkers. While the EPA has taken steps to address the issue, the ongoing legal challenges and industry pressure highlight the complexities of regulating pesticides.
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Imported organic green beans are high-risk
Imported organic green beans are considered very high-risk when it comes to pesticide contamination. In fact, they are the only organic food to receive this rating. This is due to the detection of pesticides that have been banned for over a decade, indicating illegal use and inadequate oversight of imports.
A study by Consumer Reports found that 4% of green beans tested positive for acephate or methamidophos, a breakdown product of acephate. Acephate has been banned for use on green beans since 2011, and methamidophos has been completely banned since 2009 due to health risks. The presence of these pesticides in imported organic green beans suggests a lack of compliance with regulations and highlights the need for stricter import controls.
The Environmental Working Group's (EWG) Shopper's Guide to Pesticides in Produce has also identified green beans as one of the 12 non-organic or conventionally grown fruits and vegetables with the highest amounts of pesticides. Their analysis found that about 8% of non-organic green bean samples tested positive for acephate or methamidophos, which are linked to harm to the developing nervous system.
While organic produce is generally considered lower risk, the detection of banned pesticides in imported organic green beans underscores the challenges of ensuring compliance with pesticide regulations across borders. It is important for consumers to be aware of these risks and make informed choices when purchasing produce.
To reduce the risk of pesticide exposure, consumers can refer to resources such as EWG's Clean Fifteen list, which identifies conventionally grown fruits and vegetables with low or no traces of pesticides. Additionally, opting for domestic organic green beans or alternative vegetables like snap peas can be a safer choice, as they are less likely to be contaminated with harmful pesticides.
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Frequently asked questions
Green beans are among the most contaminated beans, with more than 70% of samples containing at least two pesticides and a combined 84 different pesticides found on the entire crop.
Yes, conventional beans and legumes are often sprayed with glyphosate, the most widely used pesticide in the US, right before harvest. Pinto beans and chickpea products such as hummus have been found to contain glyphosate.
Yes, blueberries, strawberries, wheat, rice, and herbs such as cilantro and basil are also among the most contaminated foods.
Consumers who want to avoid pesticides can choose organic versions of foods or select items from the EWG's Clean Fifteen List, which features the conventionally grown fruits and vegetables with very low or no traces of pesticides.











































