The Great Lakes and St. Lawrence Cities Initiative is a binational coalition of U.S. and Canadian mayors from more than 125 cities and municipalities working to advance the protection and restoration of the Great Lakes and St. Lawrence River. The Cities Initiative and local officials integrate environmental, economic and social agendas to sustain a resource that represents approximately 80% of North America’s surface freshwater supply, provides drinking water for 40 million people, and is the foundation upon which a strong regional economy is based.