Mark Mattson is the Lake Ontario Waterkeeper and President of Swim Drink Fish Canada.

In this episode Mark talks about the improvements made in Lake Ontario, particularly in the Toronto area, over the past few decades and the role of laws in driving the change. He discusses the importance of connecting people to water by providing public access and opportunities to swim, paddle, and fish. Mark also discusses the development of Swim Guide, a website and app that provides water quality information for over 8,000 beaches.

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