Just Before We Left
Before going on an extended winter vacation, I turned off the water main valve for our house, just in case a plumbing issue developed while we were away.
Turning off the water supply paid big dividends when we discovered a pipe that was close to an outside wall had frozen and burst during several nights of near-zero temps while we were gone. If the water main valve hadn’t been closed, the basement would’ve been flooded.
Story credit: Reddit / Back2Bach