Vermont Just Banned Paraquat: What It Means for Your Legal Rights

Vermont made history in 2026 by becoming the first U.S. state to ban paraquat, a widely used weed killer that researchers have connected to Parkinson’s disease. Governor Phil Scott signed H.739 into law on May 26, 2026, after the bill passed with bipartisan support. The law phases out paraquat use across the state, taking effect November 1, 2026, with a transition period running until 2030 for fruit orchards and small fruit crop farmers.

The decision puts Vermont at the center of a national conversation about a chemical that’s been sprayed on American farms for more than 60 years. According to AP News, the ban reflects mounting concern about paraquat’s link to Parkinson’s disease—a connection that has also fueled thousands of lawsuits against the companies that made and sold it.

If you or a loved one developed Parkinson’s after exposure to paraquat, this is more than a policy update. It may signal that you have legal options. Below, we break down what the ban means, why paraquat is so controversial, and what rights you may have if you’ve been harmed.

What Is Paraquat and Why Is It Widely Used?

Paraquat is an industrial-strength herbicide that kills weeds and grasses on contact. It’s been used in the United States since 1964 and is often sold under brand names like Gramoxone. Farmers rely on it to clear fields before planting, dry out crops before harvest, and support no-till farming practices.

The chemical is popular for a reason: it works fast and it’s effective. As of 2018, more than 10 million pounds were applied across American farms each year.

But paraquat is also extremely toxic. A single teaspoon can be fatal if swallowed. Because of this danger, the U.S. Environmental Protection Agency (EPA) classifies it as a restricted-use pesticide, meaning only licensed applicators can legally handle it. Even with those rules, concerns about accidental exposure and long-term health effects have lingered for decades.

The Parkinson’s Disease Connection

The biggest concern surrounding paraquat is its link to Parkinson’s disease, a progressive disorder that attacks the brain’s motor system. Symptoms include tremors, stiffness, slowed movement, and balance problems. There is no cure.

Decades of research point to a troubling pattern. People who apply paraquat are more than twice as likely to develop Parkinson’s compared to those who use other pesticides. One study published in the American Journal of Epidemiology (Costello et al., 2009) found that living within 500 feet of farms using paraquat increased Parkinson’s risk by 75%.

Scientists believe the mechanism comes down to oxidative stress. Paraquat kills plants by triggering this stress at the cellular level—and it appears to do similar damage to human nerve cells. That damage targets dopamine-producing neurons, which is the primary cause of Parkinson’s disease.

The Michael J. Fox Foundation, which has pushed for a federal paraquat ban for more than a decade, applauded Vermont’s action. “Now it’s time for other states—and Washington—to do the same,” said Michael J. Fox after the bill passed.

Global Bans vs. U.S. Usage

Vermont’s ban may be a first for the United States, but the rest of the world has been moving away from paraquat for years. More than 70 countries have already banned it, including the European Union, the United Kingdom, China, Vietnam, Malaysia, and Thailand.

The contrast raises a fair question: why has the U.S. allowed continued use? The EPA announced a reassessment of paraquat’s safety in late 2022, but that review remains incomplete. Advocates continue to press federal regulators to finish the review and act on the science.

There’s another telling development. Syngenta, the chemical’s longtime manufacturer, announced it would stop global production of paraquat by mid-2026. The company says the decision is about competition from generic producers. Still, plaintiffs’ attorneys note that companies rarely walk away from a flagship product while thousands of lawsuits over that product remain pending.

Legal Implications: What This Means for Paraquat Litigation

Vermont’s ban arrives during a wave of paraquat litigation. Thousands of people diagnosed with Parkinson’s have sued Syngenta and Chevron, the companies that manufactured and distributed the herbicide. These lawsuits allege the companies knew about the Parkinson’s risk for years but failed to warn the public.

Most of these cases are consolidated in a federal multidistrict litigation (MDL) in the Southern District of Illinois, with thousands of additional claims filed in state courts like Pennsylvania. Settlement negotiations are ongoing, and estimates suggest individual payouts could range from tens of thousands to well over $1 million, depending on the strength of the claim and the severity of the illness.

A state ban won’t prove any single plaintiff’s case. But it strengthens the broader argument that paraquat is too dangerous to use safely—an argument that becomes harder for defendants to counter as states act and the manufacturer exits production.

What Vermont’s Ban Means for Farmers

The law isn’t a sudden shutoff. Vermont built in a transition period to give agricultural communities time to adjust. The full statewide ban takes effect by the end of 2030, with extra time for fruit orchards and small fruit crop farmers who may need to find safe, effective, and affordable alternatives.

This phased approach is designed to protect public health without disrupting the livelihoods of farmers who have depended on paraquat for years.

What Comes Next: Will Other States Follow?

Vermont’s leadership may be the start of a larger trend. The Michael J. Fox Foundation reported it’s working on paraquat legislation in roughly a dozen states in 2026, including New York, Pennsylvania, and Minnesota. A national poll conducted in early 2026 found that about two-thirds of voters support banning or restricting paraquat.

Momentum is building at the federal level too. In April 2026, the U.S. House passed a bipartisan amendment to the Farm Bill that protects each state’s ability to set its own pesticide safeguards. That protection matters, because it keeps the door open for more states to act.

Know Your Legal Rights After Paraquat Exposure

Vermont’s historic ban confirms what many researchers and advocates have warned for years: paraquat carries serious health risks, and people exposed to it deserve protection. If you developed Parkinson’s disease after being exposed to paraquat, you may have the right to seek compensation—even if your exposure happened years or decades ago.

You don’t have to be a farmer to have a claim. People exposed through landscaping work or by living near agricultural areas may also qualify. The key factors are usually a Parkinson’s diagnosis, evidence of paraquat exposure, and acting within your state’s filing deadline. Because the law gives you time from when you knew or should have known about the connection, many people who were exposed long ago can still file.

If you believe paraquat exposure contributed to your Parkinson’s diagnosis, contact Wlach Law for a free, confidential case review. Our team can help you understand your options and pursue the compensation you deserve.

Frequently Asked Questions

Who qualifies to file a paraquat lawsuit?
You may qualify if you were exposed to paraquat—through farming, landscaping, or living near treated fields—and have since been diagnosed with Parkinson’s disease or a related neurological disorder. Evidence of exposure, such as work records or medical history, strengthens your claim.

Can I still file if my exposure happened decades ago?
Often, yes. The filing deadline typically starts when you knew or reasonably should have known your Parkinson’s might be linked to paraquat. Since the connection isn’t widely known, many people with old exposures remain eligible. An attorney can confirm the deadline in your state.

Does Vermont’s ban affect my lawsuit?
A state ban doesn’t automatically prove your individual case. But it reinforces the broader argument that paraquat is unsafe, which can add pressure on manufacturers during settlement negotiations.

How much could a paraquat claim be worth?
Settlement estimates vary widely based on the strength of your evidence and the severity of your illness. Reported projections range from tens of thousands of dollars to well over $1 million per plaintiff. A case review is the best way to understand your potential claim.

Who are the companies being sued?
Most lawsuits target Syngenta, the longtime manufacturer of paraquat, and Chevron, which distributed it in the United States.

Walch Law- Winning Paraquat Law Firm

If you are dealing with the negative effects of Paraquat exposure, you want to find the best California paraquat law firm for you and your family. The sooner you get started, the better- time is of the essence in these cases. Call the team at Walch Law now to get started for free.