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What Should You Do With Gas and Water Lines Post-Earthquake?

April 5, 2026

Quick Answer

After an earthquake, turn off gas lines at the mains valve to prevent explosions and fires, but only if you can safely access the shut-off valves. If you cannot reach the valves, leave the gas on but do not use any appliances. For water lines, locate the main shut-off valve and turn it clockwise to close it, preventing further damage.

Turning Off Gas Lines

If you need to turn off the gas lines, locate the main shut-off valve. It’s usually near the street or at a fixed point where the line connects to the house. Turn the valve clockwise to shut off the gas supply. This will prevent fires and explosions, which can be deadly.

If you cannot reach the shut-off valves, do not attempt to turn them off. This can cause more harm than good. Instead, leave the gas on but do not use any appliances that require gas, such as stoves, ovens, or furnaces. This will help prevent accidental ignition.

Locating and Turning Off Water Lines

Locate the main shut-off valve for your water supply. This is usually near the street or at a fixed point where the water line connects to the house. Turn the valve clockwise to shut off the water supply. This will prevent further damage to your home and its contents.

The main shut-off valve is typically a large, metal valve with a handle. It may be buried underground or accessible from a sidewalk or driveway. If you cannot find the main shut-off valve, look for a smaller valve near your water meter. This valve can also be used to shut off the water supply.

Safety Precautions

When working with gas and water lines, safety should be your top priority. Wear protective clothing, including gloves, safety glasses, and a dust mask. If you are unsure about how to turn off the gas or water lines, do not attempt to do so. Call a professional plumber or utility company for assistance.

Remember, turning off gas and water lines requires caution and knowledge. If you are unsure about how to proceed, it’s always better to err on the side of caution and seek help from a professional.

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