In the case you have a plumbing emergency, it is always a good idea to educate yourself on how and where to turn off your main home water supply. Attempting to do any work on plumbing while the water is still turned on can cause flooding in your home and could cost you thousands of dollars in water damage and repairs. In the Winter time and when temperatures drop significantly, the water in your pipes can freeze . When water freezes, it expands and can then cause the pipe to burst. If bursting has already occurred, turn off your home's main water valve as fast as humanly possible to avoid even more issues. If you are able to contain the situation as soon as possible, it will greatly help with flooding and allow a bigger window of time for a licensed plumber to arrive (if needed). Everyone in your household should know where the main home water shutoff valve is located and how to go about turning it off. Also, if you are going to be away from your home for an extended period of tim...