Line 5 Pipeline: Wisconsin Reroute

The Line 5 oil pipeline crosses more than 280 rivers and streams that flow indirectly into the Great Lakes, waters that supply drinking water to over 40 million people.

Clients

Bad River Band of Lake Superior Chippewa

Regional Office / Program

Case Overview

Line 5 is a 645-mile pipeline operated by Enbridge Energy that transports crude oil and natural gas liquids from Superior, Wisconsin to Sarnia, Ontario. The 69-year-old pipeline has ruptured at least 30 times in the past 50 years, releasing more than 1 million gallons of oil.

The Great Lakes are the lifeblood of Tribal Nations across Ontario, Wisconsin, Minnesota, and the Upper Peninsula of Michigan, who depend on its connected tributaries, coastal waters, groundwater aquifers, and fish and plant populations to sustain their supply of drinking water, food, and ancient medicines.

In 2021, the Wisconsin Department of Natural Resources released a deeply flawed draft environmental review of a dangerous plan by Enbridge Energy to relocate part of the Line 5 oil pipeline where it runs through the Bad River watershed. Both the plan and the environmental review utterly failed to analyze the hazards this proposal creates for the surrounding communities, including the Bad River Band of Lake Superior Chippewa, as well as the ecosystems of the surrounding rivers and the local drinking water supply.

Earthjustice represents the Bad River Band in challenging the environmental review of the pipeline.

The Tribe’s Reservation sits within the Bad River watershed, a critical Lake Superior tributary that spans over 1,000 miles of interconnected rivers including the White River (Waabishkaa-ziibi) and the Bad River (Mashkiigon-ziibi). The watershed is the cultural epicenter of the Bad River Band, and keeping it healthy has major environmental and economic significance.

In a related case, the Bay Mills Indian Community, an Ojibwe Tribal Nation, is advocating and litigating to shut down the Line 5 pipeline and prevent a proposed tunnel project underneath the Great Lakes. Earthjustice is representing Bay Mills in its legal fight.

The Bad and White rivers flow through the Bad River Reservation and into Lake Superior in northern Wisconsin. Enbridge's Line 5 pipeline crosses both rivers and threatens the Bad River watershed and reservation.
Jaida Grey Eagle for Earthjustice

Case Updates

September 24, 2026 In the News: Public News Service

WI leaders resolute in demands for state action after Line 5 spill

Stefanie Tsosie, Attorney, Tribal Partnerships Program: “For these environmental laws to work, for the system that we have to work, we need people to actually enforce it when companies run roughshod over communities.”

September 14, 2026 document

Line 5 Reroute: Bad River Band MSJ Reply Brief in U.S. District Court for D.C.

Earthjustice filed a brief on behalf of the Bad River Band in the U.S. District Court for D.C., requesting a hearing to present arguments that the U.S. Army Corps’ approval for the Line 5 reroute project is unlawful and should be thrown out.

September 14, 2026 document

Declaration of Naomi Tillison, Bad River Band

Declaration of Naomi Tillison, director of the Mashkiiziibii Natural Resources Department of the Bad River Band of Lake Superior Tribe of Chippewa Indians in Case 1:26-cv-01171-TNM.