Great Lakes Water Quality Agreement (GLWQA)

The Great Lakes Water Quality Agreement is a commitment between the United States and Canada to restore and protect the waters of the Great Lakes. The Agreement provides a framework for identifying binational priorities and implementing actions that improve water quality. EPA coordinates U.S. activities under the Agreement.

Background
of the Agreement

Latest News

Recommended Binational Phosphorus Targets to Combat Lake Erie Algal Blooms

GLWQA requires the United States and Canada to reduce excess phosphorus levels that contribute to algal blooms in Lake Erie. In 2013, a binational workgroup of subject matter experts from federal, state, provincial and local governments, academia and nongovernmental organizations was convened to develop recommended phosphorus reduction targets for Lake Erie.