Freezing pipes was a huge issue up here that winter, LOTS of broken water pipes, including water mains in town... fortunately we had no problems at our house, though
Our water line is buried pretty deeply, around 7 feet down, and we had a very heavy snow cover that year as well as the cold temps; most of the problems seemed to occur where people had plowed the snow so the pipes didn't have that insulating layer.
What I can't imagine is how people survived winters in the north in the "olden days." (they must have been a heck of a lot tougher than I am!)