What happens if you have a gas leak outside?

Author: Werner Ankunding  |  Last update: Monday, December 29, 2025

While gas from an outdoor gas leak typically has the chance to dissipate, it can build up under structures or in sewer pipes, creating the risk of an explosion. Unaddressed outdoor leaks can also create health risks and damage the environment.

What to do when there is a gas leak outside?

Avoid creating any sparks. Evacuate the Area: Move away from the area where you smell gas. Encourage others to leave as well. Call for Help: Once you are at a safe distance, call the gas company or emergency services to report the smell. Provide them with your location and any relevant details.

Can a gas leak outside cause an explosion?

No, for an explosion the gas has to mix with oxygen, usually in the atmosphere. So as long as the gas stays inside the pipe there is no possibility of an explosion. If a leak occurs and the gas mixes with atmosphere then an explosion can occur. But a gas pipeline cannot explode as long as there is no leak.

How long does it take for a gas leak to harm you?

Severe leaks can cause this problem in just five minutes. The EPA states that exposure to concentrations of nine ppm or more for eight hours is enough to produce harmful health effects for at-risk individuals. Exit the property and call 911 if you suspect your home has a gas leak.

Who pays for gas leaks outside the house?

Usually, if the issue arises outside your property boundaries or in the pipelines up to and including the meter, the utility company will bear the cost.

How to tell if you have a gas leak by looking at the meter

How to report a gas leak outside?

Signs of a possible gas leak

Leave the area immediately. Call 9-1-1.

Do I have to pay if I have a gas leak?

It's free to call the National Gas Emergency Service on 0800 111 999 to report a gas leak. They'll send an emergency gas engineer to make sure your home is 'Gas Safe' – this is free of charge and usually within one hour of making the call. However, they won't fix any appliances or pipework.

How serious is a small gas leak?

A gas leak is when natural gas leaks from a pipeline and then into an area where it shouldn't be. Leaks are considered very dangerous since they can build into an explosive concentration. They can kill vegetation and trees, cause explosions and fires, and might release greenhouse gases into the atmosphere.

Can you stay in a house with a gas leak?

Here's what you should DO if you smell gas: DO leave the home, building, or area of the suspected leak. Get to a safe area as quickly as possible. After leaving your home, DO call the 24-hour emergency number for Peoples at 1-800-400-4271, or call your local emergency response number.

What is the most common cause of an outdoor gas leak?

The most common cause of gas leaks outside the house is natural wear and tear on old pipes or other equipment. Over time, pipes may become corroded or damaged due to water seepage or shifting soil. This can create tiny cracks in the piping that allow natural gas to escape.

How often do houses explode from gas leaks?

Since 2010, according to data from the U.S. Pipeline and Hazardous Materials Safety Administration (PHMSA), there have been 3,138 significant gas leaks incidents – 390 resulted in an explosion. These incidents have injured 725 and killed 163 people.

What happens if a gas leak goes unnoticed?

YOUR GAS BILL IS HIGHER

Gas leaks are subtle in smell but very obvious in bills. They can even go on for months undetected. But if there's a significant amount of gas escaping from your system, it can cause a spike in your gas bill. Pay attention to any sudden changes in your monthly invoice.

Are you responsible for a gas leak?

Who Repairs Gas Leaks. Usually, plumbers and gas company professionals make repairs to gas lines. Gas companies are responsible for leaks on their side of the meter, and homeowners are responsible for leaks typically from the meter to throughout the house.

What to do if you spill gas outside?

In most cases, you'll have to take your spilled gas to the nearest hazardous waste disposal center. How to properly dispose of spilled gas can differ from state to state, so it's a good idea to check with your local authorities first.

How long does it take to fix a gas leak outside?

How Long Do Gas Leaks Take to Fix? A gas leak could take anywhere from one hour to 24 hours to fix, depending on where it's located and the severity of the issue. If the gas leak or outage is off-site, then your utility provider will let you know when it's safe to turn your gas back on.

What to do if I smell gas outside?

If the odor is strong, leave the premises immediately and tell others to leave. Then, call your local gas company from a neighbor's home. Outside gas odors should be reported right away - do not try to locate the source yourself.

How long can a gas leak go undetected?

One of the biggest problems with gas leaks is how hard they can be to detect — many go undetected for months or even years. Fortunately, there are some warning signs that you may have a gas leak in your home. They include: Gradual changes in air quality.

Is it safe to sleep in the house after a gas leak?

If you suspect you're dealing with a gas leak in a house, take the following steps: Evacuate the premises. Everyone in the home should leave the building immediately and regroup at a pre-chosen safe place.

Can a small gas leak cause an explosion?

Natural gas explosions are not only devastating but often deadly. A small leak, if exposed to a spark or flame, can trigger an explosion powerful enough to cause huge fires and significant loss of life. The energy blast of the explosion can damage or even destroy houses and buildings.

How much of a gas leak is OK?

The acceptable leak rate does vary depending on whether the source is domestic or commercial, but a leak rate of 0.000 5 m3/h per m3 of space is generally acceptable in well ventilated areas.

Can a gas leak smell come and go?

Natural gas leaks are particularly likely to cause smells in small, enclosed areas where gas can build up. If the leak is outside, the smell may seem to come and go as the breeze blows it away. The other big sign to look out for is a strange noise.

Is a gas leak covered by home insurance?

In certain scenarios, yes, such as if the gas leak is severe enough to cause an explosion. Explosions are a covered peril under standard homeowners policies. However, other scenarios won't be covered, such as if the gas leak occurs due to an aging appliance, and doesn't lead to something catastrophic like an explosion.

Is a gas leak call out free?

Calling the National Gas Emergency number to report a gas leak is free. An emergency gas engineer will be sent, free of charge, to 'make safe' your property. They won't repair appliances or pipework, though, that's something you'll need to arrange and pay for yourself. Always use a Gas Safe registered engineer.

Are gas leaks expensive to fix?

Cost to Repair a Gas Leak

cost $120 to $250, though you should plan for financial surprises. For example, if drywall is covering up a leaky gas pipe, you will have to hire a drywall contractor to replace the areas knocked out by the plumber. This will set you back $270 to $760.

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