On Monday, January 22, 2018 at 9:29:32 AM UTC-5, JBI wrote:

and ended up with a burst line in the kitchen. The township here also
ended up with a burst line under city streets. So, definitely not a
good "pipe friendly" winter so far. I just hope it's over. Usually,
when we get these freak cold periods, once they've had their couple of
weeks, they're done for the season and I just hope that's the case this
time.

Pipes break underground even though they might not have frozen. Extreme temperatures hot or cold are enough to cause ground movement.