The overall condition of the Great Lakes has been assessed as “fair and unchanging” in the 2019 State of the Great Lakes joint report by the U.S. Environmental Protection Agency and Environmental and Climate Change Canada, published on June 3.
The lakes were assessed on nine indicators of ecosystem health as part of the 2012 Great Lakes Quality Agreement between the United States and Canada.
Great Lakes Now
https://www.greatlakesnow.org/2020/06/state-great-lakes-stable-rollbacks-protection/