It's fair to say that over the last decade—and technology has certainly helped with this—we can do a much better job of identifying point sources of pollution and non-point sources of pollution. For point sources, we know it's end of pipe. We know where it's coming from. Non-point, not so much, but there is technology that allows us to be able to identify where that non-point source pollution might be coming from.
As it relates to the health of the Great Lakes, the federal government has responsibility for the lakes—they're international waters—but what happens on the land within the watersheds is a provincial responsibility. Ultimately, it comes down to what the federal government and the provinces can do together to make sure that what's happening on land is not causing further harm to the health of the lakes. That's where collaborative governance—that collaborative science and management—is so important.
Increasingly, it's about working with large cities—for example, Montreal and Toronto—where, when there are heavy rain events, you still see to this day combined sewer overflows that are dumping raw sewage into the Great Lakes. That's only going to be fixed by massive infrastructure investments, which cities do not have. They need the support of the Canada Infrastructure Bank and other funding mechanisms to be able to tackle some of these infrastructure challenges that lead to some of the environmental problems in the Great Lakes.