
Monsanto has been the subject of widespread criticism for its role in environmental contamination and pollution. The company has been accused of producing toxic chemicals, such as Agent Orange, PCBs, and DDT, which have had devastating effects on local communities and the environment. Monsanto's production of PCBs, in particular, has led to serious water pollution and contaminated soil and water systems, resulting in high rates of cancer, liver disease, and other health issues among residents. The company has also been criticised for its aggressive patenting of genetically modified seeds, sparking intense debates about food sovereignty and farmer rights. Additionally, Monsanto's overuse and misuse of pesticides and synthetic fertilisers have contributed to environmental damage and herbicide resistance. Despite facing numerous lawsuits and settlements, Monsanto's products continue to be used and consumed, with the company being acquired by Bayer in 2018.
| Characteristics | Values |
|---|---|
| Company | Monsanto |
| Type of company | Chemical producer, agricultural and biochemical products |
| Year of operation | 1901-2018 |
| Location | Anniston, Alabama |
| Pollution type | Polychlorinated biphenyl (PCB) compounds |
| Affected areas | Dead Creek, Snow Creek, Choccolocco Creek |
| Health impact | Cancer, liver disease, diabetes, birth defects, developmental delays, and liver changes |
| Legal actions | Fined $700 million in 2003, $650 million settlement rejected in 2020, fined $100 million in 2025 |
| Other harmful products | Roundup, Lasso, dicamba, Agent Orange |
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What You'll Learn

Monsanto's PCB pollution in Oregon
Monsanto, an agrochemical company, has been at the centre of several controversies related to pollution. One of the most notable cases involves Monsanto's production and use of polychlorinated biphenyls (PCBs), which are highly toxic and persistent organic pollutants. PCBs were used in various industrial applications, including as cooling and insulating fluids in electrical equipment and as additives in the manufacture of flexible PVC coatings.
In Oregon, Monsanto faced significant backlash for its role in polluting the state with PCBs. In December 2022, the Oregon Department of Justice reached a landmark settlement with Monsanto, agreeing to pay a lump sum of nearly $700 million for its role in polluting the state. This settlement was the largest environmental damage recovery in Oregon's history and was intended to address the lasting impact of PCB pollution in the state.
The settlement with Oregon was not an admission of wrongdoing by Monsanto, and the company's parent organization, Bayer, stated that Monsanto had voluntarily ceased PCB production in 1977 and never manufactured, used, or disposed of PCBs within the state. However, the impact of PCB pollution extended beyond Oregon, with similar contamination issues reported across the nation, including in Anniston, Alabama, where Monsanto was found to have discharged toxic waste and dumped millions of pounds of PCBs into local creeks and open-pit landfills.
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Monsanto's pollution in Chicago
Monsanto, now owned by German company Bayer, has been accused of polluting Chicago's air, water, and soil with toxic chemicals known as polychlorinated biphenyls (PCBs). In 2023, the City of Chicago filed a lawsuit against the company, seeking to hold it accountable for the contamination and the resulting health risks to its residents.
For decades, Monsanto released PCBs into the environment, causing significant harm to both the people and the natural resources of Chicago. PCBs were used in a variety of household and industrial products, including paint, electrical equipment, and insecticides. Even after they were banned in 1979, products containing PCBs continued to discharge the chemicals into Lake Michigan and the Chicago River through rainwater, as alleged by the city.
Monsanto has been accused of intentionally misleading the public and concealing the dangers of PCBs, which have been linked to liver and thyroid problems, as well as issues with the immune and reproductive systems. The lawsuit seeks to force the company and its successor firms to take responsibility and bear the financial burden of the cleanup efforts required to address the PCB contamination.
Chicago is not the only city or state to take legal action against Monsanto for PCB pollution. Similar lawsuits have been filed in Pennsylvania, Oregon, Vermont, Washington, and Massachusetts, with settlements ranging from $80 million to $700 million. Monsanto has also faced lawsuits from individuals who claimed that they suffered from cancers, specifically non-Hodgkin's lymphoma, due to the presence of PCBs in their bodies.
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Monsanto's pollution in Latin America
Monsanto, an American agrochemical and agricultural biotechnology corporation, has been accused of causing environmental damage and human health issues through its products and business practices. The company has a history of producing toxic chemicals and pesticides, with residues from these products leaving some of the most polluted sites globally. Monsanto's pollution in Latin America has been particularly notable, with countries such as Argentina, Brazil, Paraguay, Uruguay, and Bolivia experiencing the impacts of its activities.
In Latin America, Monsanto's activities have been linked to environmental degradation and health issues. The company's products, such as pesticides and genetically modified seeds, have been associated with an increase in soybean production in the region, leading to concerns about heavy herbicide use and genetic pollution. In Argentina, the expansion of soybean cultivation has been tied to deforestation, fires, and human rights violations in the Gran Chaco border area with Paraguay. Additionally, the country has seen a rise in cancer rates in soy-growing regions, with pesticide and chemical use suspected as contributing factors.
Monsanto's influence in Mexico is also significant, with the company controlling over 70% of the seed market. This control impacts not only vegetable cultivation but also the health of the population and animals that consume these seeds. The Mexican government has been criticized for ignoring the presence of agrotoxins in children's urine samples from rural communities, prioritizing increased agricultural production instead.
Brazil has also been affected by Monsanto's activities, with the government approving more than 160 pesticides, some classified as "highly hazardous." The approval of controversial herbicides, such as Roundup, has raised concerns due to their known negative health impacts. Colombia has similarly been impacted by the introduction of these pesticides.
Monsanto's products have been labeled as carcinogenic by experts and institutions. For example, in 2019, a French court found the company guilty of poisoning a farmer with Lasso, a weed killer containing monochlorobenzene. Monsanto was aware of the dangers of this substance, yet it continued to be sold, causing long-term neurological damage to those exposed. The company's Roundup herbicide has also faced scrutiny for its potential health and environmental risks, with glyphosate, one of its primary ingredients, found in human breast milk and the urine of 93% of U.S. citizens tested.
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Monsanto's pollution in Tennessee
Monsanto Co. has been responsible for significant pollution in Tennessee. The Monsanto Chemical Company site in Maury County, Tennessee, is located between the Duck River and Williamsport Highway (State Route 50). The site was formerly used for industrial activities, including the production of hazardous substances, which resulted in contamination of the surrounding area. Due to the contamination, the site is now subject to land-use restrictions to protect human health and the environment.
One of the primary concerns regarding Monsanto's pollution in Tennessee is the discharge of toxic waste and the dumping of millions of pounds of polychlorinated biphenyls (PCBs) into waterways and open-pit landfills. Monsanto enjoyed a lucrative monopoly on PCB production for four decades and continued to battle to protect its monopoly even after PCBs were confirmed as a global pollutant. The company concealed its actions and the extent of contamination for decades, as revealed by internal documents.
In addition to PCB pollution, Monsanto has also faced criticism for its use of pesticides and weed killers, such as dicamba and glyphosate. In 2017, Tennessee imposed restrictions on the use of dicamba due to its damaging effects on crops that are not genetically modified to withstand it. Dicamba is a key component of Monsanto's biotech seed launch, and its use has spiked across the United States in recent years. The company has also been accused of manipulating scientific literature on glyphosate and engaging in research misconduct to prevent oversight by regulatory bodies.
The pollution caused by Monsanto in Tennessee has had significant legal repercussions. More than 300 Tennessee residents have filed lawsuits against Bayer, the current owner of Monsanto, claiming that they became ill from using Roundup, a glyphosate-based herbicide. There have also been efforts by lawmakers to introduce legislation to protect Roundup from lawsuits and grant legal immunity to Bayer-Monsanto. However, these bills have faced opposition and have been postponed until 2026 due to concerns about the removal of people's rights to jury trials and the potential for frivolous lawsuits.
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Monsanto's pollution of food supply
Monsanto has been accused of polluting the food supply through its use of pesticides and genetically modified organisms (GMOs). The company has a long history of toxic contamination, including the discharge of mercury and polychlorinated biphenyl (PCB)-laden waste into local creeks and dumping of millions of pounds of PCBs into open-pit landfills. These actions have resulted in serious health problems for both humans and animals, with PCBs causing cancer and other health issues. Monsanto has also been criticized for its overuse of pesticides, which has contributed to environmental damage and herbicide resistance.
In April 2019, a French court found Monsanto guilty of poisoning a farmer with its weedkiller Lasso, which contains monochlorobenzene. This chemical has been banned in several countries due to its harmful effects, which can include long-term neurological damage. Monsanto's flagship product, Roundup, has also come under scrutiny for its potential negative environmental and health impacts. The company has been accused of secretly funding academic studies to influence policy decisions and protect its interests.
Monsanto's dominance in the seed market, particularly in the United States and Latin America, has raised concerns about the impact on food security and the environment. The company controls a significant portion of the seed market in Mexico, influencing food production and herbicide use. In Brazil, the government's approval of numerous pesticides, some of which are highly hazardous, has been linked to Monsanto's influence.
Monsanto's aggressive tactics have targeted small farmers, and the company has been accused of using private agents to intimidate farm country. The company's control over seeds and genetic modification technology has allowed it to exert significant influence over the world's food supply. Monsanto's actions have contributed to concerns about the sustainability of the food supply and the potential risks posed by its products to human health and the environment.
Monsanto's pollution of the food supply has had far-reaching consequences, leading to health issues, environmental damage, and social unrest. The company's practices have been the subject of numerous lawsuits and protests, with critics demanding accountability and a shift towards sustainable alternatives.
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Frequently asked questions
Monsanto has been accused of producing a lot of pollution. The company's production of PCBs (polychlorinated biphenyls) led to widespread environmental contamination with devastating effects on local communities. Monsanto operated a PCB manufacturing plant in Anniston from 1929 to 1971, dumping toxic waste into local waterways and landfills. Monsanto was also one of the primary manufacturers of Agent Orange, a powerful herbicide used in the Vietnam War that caused lasting environmental damage.
The contamination from Monsanto's PCB manufacturing plant in Anniston left residents with high rates of cancer, liver disease, and diabetes. Monsanto's products have also been linked to birth defects, developmental delays, and other severe health issues in both children and adults.
Yes, Monsanto has faced numerous lawsuits and settlements over the years for damaging the health of its employees and residents near its Superfund sites through pollution and poisoning. In 2003, Monsanto paid $700 million to settle claims by 20,000 Anniston residents over PCB contamination. In 2025, Monsanto was ordered to pay $100 million to four people who were sickened by PCBs at a school in Monroe, Washington.
Monsanto has not taken full responsibility for its pollution but has agreed to help with the costs of remediation in some cases. In 2018, Monsanto was acquired by Bayer, a pharmaceutical company, which has faced criticism and lawsuits over Monsanto's products and business practices. Bayer has continued to sell Monsanto's products, including Roundup, which has been linked to environmental and health issues.











