The Great Lakes, an ecosystem rehabilitated, but still under threat.

Since 1972, the Parties (United States and Canada, 1987) to the Great Lakes Water Quality Agreement have been working collaboratively to achieve the purpose of the Agreement "to restore and maintain the chemical, physical and biological integrity of the waters of the Great Lakes Basin Ecosystem". Billions of dollars and countless person - hours have been expended towards this end, but have the Parties, and their numerous collaborators at the state, provincial, and municipal levels, along with industry and citizen activists achieved meaningful results? This paper will examine the information provided through various monitoring programs and will assess the success of the Parties' programs, and will also discuss the continuing threats to achieving the purpose of the Agreement.