Threats to the Great Lakes

The Great Lakes face a host of threats – from harmful algal blooms and plastic pollution to invasive species and failing water infrastructure. The more you know, the more you can do to help.

Protecting Water, Sustaining Life

The Alliance for the Great Lakes is a nonpartisan nonprofit working across the region to protect our most precious resource: the fresh, clean, and natural waters of the Great Lakes. Learn more about threats to the Great Lakes and how you can make a difference.

Protect the Great Lakes

The Great Lakes hold 20% of the world’s supply of surface freshwater, and provide drinking water to 40 million people in the region. Your support will help protect these lakes and preserve their legacy of clean water for generations.

Donate Today!