If flooding is imminent:
Turn off electrical power to each appliance and leave it off.
If removing a natural gas appliance, the open end of the pipe leading from the valve to the appliance should be capped or plugged to prevent leakage. This also is to prevent floodwater from getting into the gas piping system.
If evacuating the premises and the safe opportunity exists, shut off the gas valve at the meter. Turn gas off at the main shut-off valve on the inlet pipe next to the gas meter.
In the midst of flooding:
If flooding already has occurred, and if one hears gas escaping, smells gas in multiple rooms, or smells gas inside or outside of the premises, leave the area, and call Columbia Gas immediately at (800) 344-4077.
Columbia Gas customers who notice a strong gas odor, or if there is other evidence of a natural gas leak:
Do not enter the premises. If one smells the odor of natural gas inside one's home, leave immediately.
As a precaution, do not smoke, make a spark or flame, switch the lights on/off or raise/lower the windows.
Call the 24-hour emergency number for Columbia Gas of Ohio.
Stay nearby until a Columbia Gas representative arrives, or leave a note on the door stating where you can be reached.
Don't return until getting the all-clear indication that all is safe.
Following a flood:
If water levels were enough to cover the gas meter, call Columbia Gas to check the meter and regulator before using the gas system.
Never attempt to place natural gas appliances back in service. A licensed plumber or contractor is to check, clean, repair and pressure test all gas pipes, which may have been clogged with mud or debris.
In order to have service restored, areas in and around the affected units must provide a safe and healthy working environment for Columbia Gas representatives. This includes:
Clear, safe access to the appliance.
Removal of water from the basement.
Cleaning of debris from each appliance.
Customers may call the Columbia Gas emergency phone number at to report an emergency or schedule an appointment to have service restored.