Great Lakes Water Quality Agreement

The Great Lakes Water Quality Agreement was a landmark accord between Canada and the United States, signed in 1972. It was established to address the growing concerns over pollution and the declining health of the Great Lakes ecosystem. The agreement aimed to restore and maintain the chemical, physical, and biological integrity of the Great Lakes basin.

Key objectives included reducing phosphorus and other nutrient loads, controlling toxic substances, and managing the impact of industrial and municipal discharges. The agreement led to significant cooperative efforts in monitoring, research, and pollution control measures by both nations, resulting in improved water quality and the resurgence of some fish populations over time.12