The Canada-Ontario Agreement (COA) is the federal-provincial agreement that supports the restoration and protection of the Great Lakes Basin Ecosystem. The Agreement between the governments of Canada and Ontario outlines how the two governments will cooperate and coordinate their efforts to restore, protect and conserve the Great Lakes basin ecosystem. It builds on the actions taken through previous agreements, and focuses priorities for future actions. The Agreement also contributes to meeting Canada’s obligations under the Canada-United States Great Lakes Water Quality Agreement.