![](https://i.cbc.ca/ais/1.7178810,1717417061673/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C0%2C920%2C517%29%3BResize%3D%281180%29)
![](https://i.cbc.ca/ais/1.7178810,1717417061673/full/max/0/default.jpg?im=Crop%2Crect%3D%280%2C0%2C920%2C517%29%3BResize%3D%281180%29)
It’s a popular travel route for pleasure boaters…But not many people dare to dip a toe into the canal, let alone swim. Should they? An 80-year-old triathlete shares how he swam in the canal and lived to tell the tale, and a biologist tells Robyn what’s REALLY in that water.