Trump EPA move could allow chemical plants to bypass pollution limits, increasing cancer risk

A recent analysis warns that potential exemptions to air pollution rules under the Trump administration may protect chronic polluters and expose millions to higher cancer risks.

Shelby Jouppi reports for Inside Climate News.


In short:

  • The EPA under President Trump is reviewing the HON rule, which targets emissions from 218 chemical facilities responsible for releasing known carcinogens near vulnerable communities.
  • These facilities are often located in low-income, predominantly Black and Latino areas and have a documented history of violating clean air laws, with 23% persistently out of compliance.
  • Ethylene oxide, a key target of the rule, is linked to high cancer risks, especially for children, but industry groups and Texas regulators continue to question U.S. Environmental Protection Agency science and push for looser standards.

Key quote:

“Rolling back the HON Rule is only going to make people sicker.”

— Tracey Woodruff, former EPA scientist and professor at the University of California San Francisco

Why this matters:

Communities near petrochemical plants — especially along the Gulf Coast — face heightened health risks from air pollution, including cancer, respiratory disease, and reproductive issues. Many of these neighborhoods are predominantly Black or Latino, with higher poverty rates and less access to healthcare, making them more vulnerable to industrial toxins. Ethylene oxide, a chemical emitted by these plants, is particularly dangerous; it mutates DNA and is linked to breast and blood cancers. Despite decades of science confirming its risks, political and industry pressure continues to challenge enforcement.

Learn more: EPA seeks to slash chemical plants’ cancer-causing emissions

A person kicking a soccer ball into a goal

The 2026 men’s World Cup could be the dirtiest ever

The sprawling North American tournament could generate 9 million metric tons of climate-warming pollution, a report found.
A row of wind turbines on dry hills

Wyoming electric utility dumps wind and solar in long-term planning

PacifiCorp’s previous upward trajectory for renewable energy will flatline beyond 2027 while its forecasted greenhouse emissions will rise.

A red, white and green Hungarian flag waving in the wind

Hungary election promises renewable energy investment and foreign factory crackdowns

Orbán, who once described EU climate ambitions as a 'utopian fantasy', has been replaced by Péter Magyar.
A wind turbine towering over a forest

Blowin’ in the wind: how Nordic countries made electricity free

As wind and hydropower flood Nordic grids, electricity prices are plunging and offering a glimpse of a cheaper energy future.
A person sitting in front of a woodstove

Does burning wood actually fight climate change?

Despite industry claims, scientists say using wood pellets is little better than fossil fuels.
A view of a large petrochemical plant with the sunset in the background

Iran war exposes dependence on petrochemicals

Disruptions from the Iran war are exposing how deeply petrochemicals — made from fossil fuels — are embedded in everyday products and global supply chains.

A group of health professionals reviewing a case file

Patients overwhelmingly favor environmentally sustainable healthcare, survey finds

A survey of more than 5,000 patients found strong support for environmentally responsible practices in healthcare, with most respondents linking environmental health to their own well-being.

From our Newsroom
Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

Multiple Houston-area oil and gas facilities that have violated pollution laws are seeking permit renewals

One facility has emitted cancer-causing chemicals into waterways at levels up to 520% higher than legal limits.

Regulators are underestimating health impacts from air pollution: Study

Regulators are underestimating health impacts from air pollution: Study

"The reality is, we are not exposed to one chemical at a time.”

Pennsylvania governor Josh Shapiro speaks with the state flag and American flag behind him.

Two years into his term, has Gov. Shapiro kept his promises to regulate Pennsylvania’s fracking industry?

A new report assesses the administration’s progress and makes new recommendations

silhouette of people holding hands by a lake at sunset

An open letter from EPA staff to the American public

“We cannot stand by and allow this to happen. We need to hold this administration accountable.”

wildfire retardants being sprayed by plane

New evidence links heavy metal pollution with wildfire retardants

“The chemical black box” that blankets wildfire-impacted areas is increasingly under scrutiny.

Stay informed: sign up for The Daily Climate newsletter
Top news on climate impacts, solutions, politics, drivers. Delivered to your inbox week days.