We live in Toronto where pipes and winter both have existed for centuries. I'm sure they will know to maintain it in winter.
Maintenance isn't the issue.
It's the original construction. You wouldn't dream of installing a water main without doing a pressure test to make sure that there weren't too many leaks.
My concern is that if there isn't a good freeze in the warranty period, you don't really know.
I've seen new watermain freeze in the winter because it turned out it wasn't deep enough. Turned out someone missed a grade change. Stuff happens.
True, though we don't get that many deep freezes these days. I don't think it's been below -5 yet this year and it's almost February. We only get really extreme cold every 10 years or so.
We seemed to get enough deep freezes during the very last years of the CLRVs at the end of the decade, with their failing air lines!
But yeah, it's a very warm winter. When I was shovelling a path across the grass yesterday, and a bit of the driveway where the grass has been encroaching - I was surprised to see the grass was bright green! I've seen that in December, and even in early January. But never near the end of January!
