Over 40 million people in the United States and Canada rely on the Great Lakes for their drinking water. Each treated glass from these lakes contains microplastics, small plastic fragments made from toxic chemicals associated with cancer and other serious illnesses. Fish, a key part of diets in the Midwest and among Indigenous tribes, immigrant groups, and communities of color, are also contaminated. Despite this, the pollution remains unregulated. At the same time, manufacturers plan to significantly increase plastic production in the U.S.

The Chicago Tribune is investigating the plastic issue in the Great Lakes. These lakes are the world’s largest source of fresh surface water. When questioned about their role in pollution, industry leaders often shift the blame to consumers. They use methods similar to those of Big Tobacco, as shown by a Tribune analysis of numerous government, scientific, and industry documents.

This investigation, funded by the Pulitzer Center’s StoryReach U.S. initiative, focuses on the spread of plastic waste in the Great Lakes, examines its health risks, and explores potential solutions. Sherri Mason, a researcher from Gannon University, gathered plastic pellets hardly bigger than rice grains on May 1, 2026, in Erie, Pennsylvania. These pellets, which spill from rail cars to trucks and local manufacturers, add to the growing pollution problem.

Despite these issues, companies continue to minimize the dangers of plastics and exaggerate the capacity to recycle them. This is part of the findings of the Tribune from a review of relevant documents. Powerful corporations often downplay these threats, raising significant concerns about transparency and accountability.