Here's our anecdotal observations from yesterday's swim from Teachbeach to Hanlan's beach:
Water at Ontario Place was crystal-clear early in the day before we left, and late in the day (around 9pm) when we returned.
Water at Hanlan's beach (Toronto Island) was dirty and full of algae.
Water at Ontario Place was crystal-clear early in the day before we left, and late in the day (around 9pm) when we returned.
Water at Hanlan's beach (Toronto Island) was dirty and full of algae.
Note the two comparison images here.