What exactly happened to the aquifer in Clearbrook during Line 3 construction, and what is being done to address it?
Construction along the Line 3 Replacement route began in December 2020, and became operational in October of 2021. The project successfully replaced an aging Line 3 that was built in the 1960s with state-of-the-art, new, safer technology that will ensure oil is transported in the safest way possible across Minnesota.
While careful attention was given to ensure that the project was completed safely, with minimal impact to the environment, there was an event in which an aquifer was impacted and water was able to flow to the surface to another part of the site. Enbridge is currently working with the DNR to remedy the issue.
Opponents of Line 3 have exaggerated this event to make it sound worse than it is. Here’s what pipeline opponents probably don’t tell you:
- This was not intentionally or carelessly done, but may have been due to sheet piling used to stabilize and create safe conditions inside the trench for workers during construction.
- The issue was identified by Enbridge in June, at the same time Independent Environmental Monitors and the DNR learned of it – there has been no delay in reporting or moving forward with repair.
- Enbridge began working with the DNR on a solution from the outset, and once a DNR-approved remedial action plan was approved, Enbridge immediately began implementing it and coordinating closely with the DNR to repair the damage and permanently stop the flow of water.
- Throughout construction, Enbridge has successfully protected 200+ water bodies, 800+ wetlands, and 50-100 other sensitive areas crossed by the project.
- The Line 3 Replacement Project is complete and the new Line 93 is operating safely.
- Enbridge has paid a penalty and mitigation amounts under DNR orders, and has placed $2,750,000 in escrow for any potential future restoration.
- Enbridge is committed to active and ongoing restoration and monitoring, and will not stop until this has been fully addressed.
Learn more and read Enbridge’s full statement and frequently asked questions about here.
The Truth about Line 3
With so much information being shared and gathered about the Line 3 replacement project, it’s important to help everyone stay focused on the facts, address any misconceptions, and make sure that information about Line 3 is grounded in truth.
Minnesotans for Line 3 has identified some common questions about the project along with information, facts, and other background that answer those important questions.

Approval Process
Who made the decision to replace Line 3, and when?
What steps have been taken to approve the Line 3 project?
What does the Consent Decree from the federal government to replace Line 3 mean?
How do actions by Line 3 opponents fit with Minnesota’s tradition of being a civically respectful community?
How many public comments were received in support and opposition to Line 3, and where were they from?
What do Minnesota’s refineries say about the need for oil from Line 3?

Environment & Safety
How do pipelines like Line 3 compare to other ways of transporting oil in terms of safety and efficiency?
If we’re transitioning to greener energy, why build more fossil fuel infrastructure like Line 3?
How can you care about protecting water and natural resources and support Line 3?
How in depth was the study to determine the environmental impact of Line 3?
What will happen to Line 3 if it is not replaced?
How do we know something like Line 3’s 1991 accident in Grand Rapids, MN won’t happen again?
What was the extent of the drilling fluid spill at the Willow River construction site, and what was done to correct it?
