Welcome to the world of facilities maintenance :-).
The good news for me is that it was usually someone else that did the stupid. The bad is that even though it’s the third time they did the same stupid, I’m not allowed to yell at them. At least you can call yourself rude names without getting fired.
Oddly enough I was thinking about your laundry room pipes the other day when the forecast was for -15
there. Yes I worry about pipes in houses 100’s km away, the curse of the maintenance man. 🙂