Wisconsin DNR Issues Notice of Violation to Enbridge Energy Over Line 5 Reroute Project

Green Bay Appleton, WI, October 13, 2026 — The Wisconsin Department of Natural Resources (DNR) has issued a notice of violation to Enbridge Energy, citing seven alleged violations of state environmental laws and permits. These alleged violations are connected to the company’s $1 billion Line 5 pipeline reroute project currently underway in northern Wisconsin’s Ashland and Iron counties.

The period during which the alleged violations occurred spans from March to September. The DNR’s notice outlines concerns across several environmental categories, including water quality impacts, wetland disturbances, air pollution stemming from a significant gas leak, and the protection of endangered resources.

Specific details regarding the exact nature of each of the seven violations, including precise dates and locations beyond the general counties, were not fully elaborated in the provided summary. The summary also did not specify the nature or extent of the significant gas leak mentioned in relation to air pollution.

The Line 5 pipeline project involves rerouting the existing pipeline. The $1 billion investment indicates a substantial infrastructure undertaking. The state environmental laws and permits Enbridge is alleged to have violated are part of Wisconsin’s regulatory framework designed to protect natural resources.

Further details on the consequences of the notice of violation, such as required actions from Enbridge, potential fines, or subsequent inspection outcomes, were not included in the summary. The state’s actions signal an oversight process for major energy infrastructure projects and their environmental compliance.

Story summarized from the original created by Danielle Kaeding on www.wpr.org, see more information here.