Do you know where the master water supply valve is in your home? Does everyone in your family know where it is? If there's an emergency, you'll need to know in a hurry. You can't afford to waste precious minutes searching while the basement floods or the carpets are drenched. You have to act fast. The most likely locations are:
Where the water supply pipe enters your home
Near your clothes washer hook-up
Near your water heater
Every home, apartment and business has a master water supply valve. To be sure you have found the right one, try turning it off briefly to see if all the water faucets in the building are shut off. If they aren't, try again.
Once you have found the right valve, mark it with a tag, bright ribbon or colorful paint. Make it easy to see. If the worst happens - and we hope it never does - you'll have to find it quickly.