There's what I get for not re-checking my facts on Wiki before posting...reesetee is right. There does exist a Wawa, ON which I was aware of having a friend who grew up near, but I made too many connections.
(Did I mention the word is onomatopoeic? If you can't tell, I think that's totally awesome.)
Not quite. The stores were named after Wawa, PA in the United States, which is where the company is still based. (I used to live in the next town over.) Canada geese also inhabited the Delaware Valley (still do), which is where the town is located.
I don't believe the company has yet spread to Canada, though I could be mistaken.
This is the Chippewa (Ojibwa) Indian word for goose. Hence, on those ubiquitous convenience stores across the northeastern US and Canada, you can see small drawings of geese. The stores were actually named after the town of Wawa, Ontario, which was named after the geese.