Enbridge owes nearly $3 million for breaching aquifer during Line 3 construction in Minnesota

The breach in Aitkin County was one of four discovered in Minnesota.

The Minnesota Star Tribune
December 25, 2025 at 3:14AM
Stored pipeline at Enbridge's Superior, Wis., terminal from the end of 2019. The company's proposal to build a pipeline across northern Minnesota is still on hold. (AP Photo/Jim Mone, File)
The new Line 3 was built to replace its 50-year-old predecessor on a partially new route across the state. (Jim Mone/The Associated Press)

Enbridge will pay the state $2.8 million for breaching an aquifer in Aitkin County while building the Line 3 oil pipeline across northern Minnesota in 2021.

The breach southwest of Hill City caused the upwelling of groundwater and was one of four aquifers ruptured by construction of the $3 billion, 340-mile pipeline.

The Minnesota Department of Natural Resources announced the latest settlement with the Canadian company this week.

Enbridge owes $300,000 in civil penalties, $1.2 million to DNR-selected projects that benefit natural resources and $1.2 million for mitigation of any future impacts that the breach may have on Moose Lake or natural resources in the area.

The breach was discovered in 2022 at the Moose Lake aquifer near Swatara. For over a year, Enbridge stabilized the site with DNR oversight.

According to a news release, the DNR has established long-term monitoring locations and protocols for the aquifer. Enbridge will pay the DNR an additional $100,000 for the ongoing monitoring.

In total, the company has agreed to pay more than $13 million over aquifer breaches.

“Enbridge takes protecting the environment seriously, and we are dedicated to resolving these matters quickly and thoroughly as we continue to work with the regulatory agencies on the ongoing restoration and monitoring,” the Calgary-based energy company says on its website.

The new Line 3 was built to replace its 50-year-old predecessor on a partially new route across the state. The project drew fierce opposition from environmental and Indigenous groups and staunch support from labor groups.

The pipeline can carry 760,000 barrels of oil per day from Alberta to Superior, Wis., to feed Midwest refineries.

about the writer

about the writer

Eleanor Hildebrandt

Reporter

Eleanor Hildebrandt is a reporter for the Minnesota Star Tribune.

See Moreicon

More from Environment

See More
card image
card image