Keystone oil pipeline leaks again in North Dakota, adding to long list of failures

A leak in the Keystone oil pipeline has spilled 3,500 barrels of crude in North Dakota, marking the 23rd spill in its 15-year history.

Josh Funk reports for The Associated Press.


In short:

  • The Keystone oil pipeline, built in 2010 by TC Energy and now operated by South Bow, leaked again Tuesday, releasing 3,500 barrels of oil in North Dakota.
  • The pipeline has had 23 total spills, including a 2022 rupture in Kansas that was the largest U.S. onshore oil spill in nearly a decade.
  • Investigators blame many of the spills on flawed construction, poor welds, and original design issues identified in government and safety agency reports.

Key quote:

“Keystone’s incident history illustrates the problematic pipeline’s systemic issues.”

— Bill Caram, executive director of the Pipeline Safety Trust

Why this matters:

The Keystone pipeline has long been a flashpoint in the debate over fossil fuels, not just for its contribution to carbon emissions but for its persistent vulnerability to leaks — failures that have environmental and public health consequences well beyond the immediate site. Compounds like benzene, toluene, and heavy metals are released when spills occur, creating particular health risks for people living nearby. With each rupture, the pipeline reveals deeper structural issues: aging materials, regulatory blind spots, and a fundamental tension between energy infrastructure built for a carbon-heavy past and a climate reality demanding urgent transition.

Related: Peter Dykstra: Pipeline Politics

NEW YORK CITY - SEPTEMBER 3 2015: Republican candidate for president Donald Trump announced he had signed a pledge not to run as an independent candidate should he fail to win the party's nomination in 2016.
Credit: andykatz/BigStock Photo ID: 100778843

Trump calls climate change a hoax. Americans aren’t buying it

New polling finds broad agreement that the climate crisis is worsening heat, floods, and wildfires.
Construction workers move bricks on a tropical beach shoreline job site.

OSHA proposed heat protections for workers. Two years later, they’re still not final

In Florida, where the state has banned adoption of local laws intended to protect outdoor workers, the lack of federal rules leaves individuals particularly vulnerable.
Free standing solar panels on green grass
Credit: Chelsea/Unsplash

Solar is booming in Indiana. Not everyone is happy about it

The state was No. 3 in solar installations last year — but with more solar has come more local opposition. Experts say genuine community engagement is needed.

Firefighter silhouetted against flames at night

Wildfires in Europe prompt tens of thousands to evacuate

Spain has declared a national emergency in the Madrid region. In neighboring France, meanwhile, President Emmanuel Macron has invoked the EU's civil protection mechanism to ask for help.
A view of a European street with trees, buildings and people walking and on bikes

What is climate gentrification? Why house prices are rising outside of Europe's city centers

Extreme heat is not only making cities less livable; it’s also reshaping who can afford to live where.

Four cyclists on a curvy mountain road

The Tour de France has reached a climate tipping point

Record heat, a wildfire, and an unprecedented stage modification highlighted the growing challenge global warming poses to endurance sports.
A lit gas stove burner.

Replacing gas stove can help asthmatics as much as some drugs, US experts find

Team in Ohio finds swapping to electric has ‘very large’ impact, despite the study being scaled back by Trump cuts.

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.