On Mon, 8 Jan 2018 12:40:08 -0800 (PST), TimR
wrote:

I've never seen the city's part of the line freeze. Break, sure, from ground movement.


We had a few blocks freeze solid here a few years ago - took till
March to thaw out The frost was down over 6 feet. After these last 3
weekls it woiuldn't surprise me if it happened again - folks in that
area have been instructed to keep a tap running slowly th help
preventthe lines from freezing.

Are you sure it's not part of your house that's frozen? Right where it enters?

also, how does it come in? Basement vs crawl space vs slab on grade makes a lot of difference.