E15 is in Canada as well (Montreal).
I've went to Esso, Petro Canada, Ultramar, Canadian Tire, CoucheTard, Petro T, Olco, Shell and Costco.
All of the premium gas had ethanol. Only Shell and Costco didn't.
When I drove in Florida, I found a station called "Marathon" that was selling "recreation gas", basically it's 100% gas, just labeled for the marina.