My Watermark is the Toronto Harbour of Lake Ontario.
I love standup paddle boarding from Cherry Beach to the islands via the Harbour. It's a beautiful way to engage with the city but it's unfortunate that I can't actually swim in those waters due to the high level of pollution.
Other large cities such as Chicago have dealt with similar issues and now is the time for Toronto do clean up it's waterways. We live near to the largest bodies of fresh water in the world and we are destroying this precious resource. The time for change is now.