The Fight Against Paraquat in East St. Louis

East St. Louis, Illinois, may seem like an unlikely place to become the epicenter of a massive international legal battle. Yet, the federal courthouse there is now ground zero for thousands of lawsuits filed against Syngenta, a Swiss agrochemical giant, and Chevron. Nearly 6,500 claims from across the nation have been consolidated in this single court, all telling a similar, tragic story: after years of exposure to the powerful herbicide paraquat, victims developed the debilitating and incurable Parkinson’s disease.

These lawsuits are not just about financial compensation; they are a fight for accountability. Victims and their families allege that manufacturers knew their product was dangerous and failed to warn them, prioritizing profits over the health of American farmworkers and rural communities. While paraquat is banned in over 70 countries—including the manufacturer’s home country of Switzerland—it remains legal and widely used in the United States.

At Walch Law, we believe that corporations must be held responsible for the harm their products cause. This guide explains the significance of the East St. Louis paraquat litigation, the devastating health risks involved, and why you must act now if you or a loved one has been affected.

What is Paraquat and Why is it So Dangerous?

Paraquat is a highly toxic chemical herbicide used to control weeds and grasses and to desiccate crops before harvest. Sold commercially under names like Gramoxone, it is one of the most effective weedkillers on the market. Its effectiveness, however, comes at a terrible cost.

The primary allegation in these lawsuits is that paraquat is a potent neurotoxin with a direct link to Parkinson’s disease. Parkinson’s is a progressive nervous system disorder that destroys the brain cells responsible for producing dopamine, a chemical that controls motor movement. The results are devastating:

Severe tremors in the hands, arms, and legs
Loss of balance and coordination
Stiffness and slowed movement
Eventual reliance on a wheelchair and loss of independence

Leading neurologists and researchers have published numerous studies highlighting the powerful connection between paraquat exposure and an increased risk of developing Parkinson’s. The science suggests that paraquat initiates a process of oxidative stress that kills dopamine-producing neurons. Despite this growing mountain of evidence, manufacturers have consistently denied any credible link between their product and the disease.

The East St. Louis Multidistrict Litigation (MDL)

When thousands of similar lawsuits are filed against a common defendant in federal courts across the country, the legal system often consolidates them into a Multidistrict Litigation (MDL). This process streamlines pretrial proceedings, such as evidence gathering and expert testimony, before a single judge.

The paraquat lawsuits from all over the United States have been centralized in the U.S. District Court for the Southern District of Illinois in East St. Louis. As of early 2026, nearly 6,500 cases are part of this MDL. These claims have been filed by people who were repeatedly exposed to the chemical, including:

Farmers and agricultural workers who mixed and sprayed paraquat.
Licensed applicators who handled the chemical professionally.
Individuals living in rural communities who may have been exposed through chemical drift or contaminated well water.

The core of every lawsuit is the charge that Syngenta and Chevron “failed to warn of the nature and scope of the health risks associated with Paraquat.” Victims, like Oklahoma cattle rancher Joe Harrison, whose case is part of the MDL, argue they were never told about the propensity of paraquat to cause or contribute to Parkinson’s disease. If they had known the true danger, they would have used a different product.

Why is Paraquat Still Legal in the United States?

One of the most frustrating aspects of this legal battle is that the U.S. has fallen far behind the rest of the industrialized world in protecting its citizens from paraquat. The European Union, China, Brazil, and even Syngenta’s home country of Switzerland have all banned the chemical due to its high toxicity and health risks.

In the U.S., the Environmental Protection Agency (EPA) has so far refused to ban paraquat for agricultural use, stating it has “not found a clear link” between exposure and Parkinson’s disease. However, the agency’s position is under increasing pressure. In January 2026, the EPA announced it would reassess paraquat’s safety and require manufacturers to provide proof that the product is safe under real-world conditions.

This regulatory inaction has left victims with only one path to justice: the court system. The East St. Louis MDL represents the primary battleground where thousands of families are forcing a chemical giant to answer for the damage it has caused.

Why You Must Act Quickly to Protect Your Rights

The legal process moves slowly, but it is governed by strict deadlines. If you have been diagnosed with Parkinson’s disease and have a history of paraquat exposure, time is not on your side. Two key factors make it essential to contact an attorney immediately.

Statutes of Limitations

Every state has a law called a statute of limitations, which sets a firm deadline on how long you have to file a lawsuit after an injury. If you miss this deadline, you lose your right to sue forever. While the “discovery rule” can extend this timeline until the date you reasonably knew your illness was linked to paraquant, manufacturers will fight aggressively to have your case dismissed on a technicality.

The Progress of the MDL

Unlike the Roundup lawsuits, the paraquat MDL has not yet had its first major bellwether trial. These test trials are crucial because their outcomes often dictate how a manufacturer will proceed with settlement negotiations. As the MDL moves closer to these trials, the pressure to resolve cases will intensify. Waiting too long to file your claim could mean missing out on potential settlement opportunities that arise from this litigation.

Building a strong case against a company like Syngenta requires time to gather extensive medical records, work histories, and expert testimony. The sooner you start the process, the stronger your case will be.

How Walch Law Can Help You Join the Fight

A Parkinson’s diagnosis is a life-altering event that brings immense physical, emotional, and financial burdens. You should not have to face this challenge alone, especially when your illness may have been caused by corporate negligence.

At Walch Law, we have over 45 years of experience fighting for Californians who have been harmed by dangerous products. We are not intimidated by large corporations and have the resources to take them on. Our team understands the science behind paraquat exposure and knows how to build a powerful case to prove the link to your diagnosis.

We handle all paraquat cases on a contingency fee basis. This means you pay absolutely nothing unless we win your case and secure the compensation you deserve.

Contact Walch Law for a Free Consultation

If you or a family member has been diagnosed with Parkinson’s disease and has a history of working with or living near paraquat, your voice needs to be heard. Join the thousands of others fighting for justice in the East St. Louis MDL.

Contact Walch Law today for a free, no-obligation consultation. We will listen to your story, review your case, and explain how we can fight for the financial security and accountability your family deserves.