Locate main gas shut-off (usually outside house) at the gas meter. The valve is usually on a pipe coming out of the ground, going into the gas meter. Turn the valve crosswise to the pipe (see the large example on the "Utilities" page under "Before the Earthquake". All the pilot lights in and around your home (stove, furnace, clothes dryer, swimming pool/ spa heater, water heater, etc.) will go out when you turn the valve off. You will need to have the gas company, or another qualified individual (plumber, contractor, or trained homeowner), relight every pilot when turning the gas back on. Forgetting to relight all the pilot lights could result in a dangerous gas buildup in your home. Remember, if you don't smell gas or have severe damage to your home you should not have to shut the gas off. It's your decision.

Clear the area around the main gas shut-off valve for quick and easy access in case of emergency.

A wrench (or specialty tool), for turning off the gas, should be attached to a pipe next to the shut-off valve or in another easily accessible location. You may want to paint the shut-off valve with white or fluorescent paint so that it can be located easily in an emergency.

If you are concerned about your ability to turn off the main gas shut-off valve or are unsure if it is in proper working order (indication of rust, etc.) or do not know how to relight your pilot lights, contact your local gas company. They can send a service representative to your house to show you the proper procedure and check the valve and pilot lights to be sure they operate properly.

Automatic gas shut-off valves are a excellent way to insure that your gas is shut off in the case of a major earthquake. They are recommended by the Fire Department. In many cities in California they are required to be installed when you sell your home or do more than a $10,000 remodel. With an automatic valve your gas will be off even if you aren't home at the time. Contact your local gas company for more information and installation.