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

A group of people silhouetted against an orange sun-tinged sky

Europeans’ ‘psychological bias’ to climate change risks slowing down progress, warns study

A new analysis of global research suggests most people believe climate change will affect others more than themselves, a cognitive bias scientists say could slow climate action.

A large drill making a hole in dry earth

Corpus Christi drills wells to prevent looming water crisis

After an industrial building boom on Corpus Christi Bay, the city is drilling wells to meet water demand, and rural Nueces County residents say their own wells are being impacted.
wind turbines under blue sky during daytime

Wyoming's top officials promise to reckon with ever-increasing wind projects, other development

Wyoming residents have urged leaders to slow wind energy projects, citing cumulative impacts on communities, land and water.

A dry river valley with a town surrounded by green fields

Himalayan winters are seeing less snowfall as more ice melts

Much of the Himalayan region is seeing far less winter snow than normal, leaving mountains bare and accelerating glacier melt, according to scientists.

black electricity tower under a pink sky during sunset

Data centers, Greenlink, and your electricity bill

Nevada’s $4.2B Greenlink grid project, meant to cut carbon, is boosting power bills as costs soar and AI data-center demand spikes.

aerial view of Louisiana Delta
Getty Images For Unsplash+

Supreme Court to hear case on Louisiana’s eroding coast

Local governments are suing oil companies over environmental damage. The companies want the suits moved out of state courts, to friendlier venues.
Oil barrels on background of the flags of Venezuela and USA.
Photo credit: Copyright: Yakobchuk/ BigStock Photo ID: 455109239

Big Oil knows that Trump’s Venezuela plans are delusional

The president’s thinking is stuck in the 1980s.
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.