A recently released report from a joint Canadian-American group says that Lake Erie is getting cleaner but there are still areas to watch.
The report, entitled "Returning to a Healthy Lake" is a technical look at improvements made in recent decades.
But the authors are also concerned about ongoing problems including city and farm runoff, shoreline erosion, invasive species like Gobi and Asian Carp and climate changes that could produce more severe storms.
Because Erie is the southernmost and most shallow of the Great Lakes it is also considered to be one of the most diverse biologically.
Tom Fuhrman of the Lake Erie Conservancy says groups must prove economic impact to get governments to invest in cleaning the water supply.
John Oliver of VisitErie says he is not getting the complaint calls of years past.
"Everyone tells us how clean the water is, how nice it is to come up (from Pittsburgh)"
Great Lakes states are looking for up to 20 billion dollars from governments to improve the quality of water throughout the Great Lakes.
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