We do have it. The amoeba is extremely common and found in almost all bodies of freshwater that are warm at least for part of the year. Since our summers are shorter up here and our population low it tends not to be as big of an issue as it is in the Southeast but they're still here. Hell it can be found in tap water and likes to grow in things like water heaters which caused several people to get sick from it while using things like Neti Pots.