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If You Smell Gas
This is PHMSA’s guidance and we have added nothing to it. Do this first and read the rest of the site later.
Read this first
If you smell gas, leave the building on foot. Do not use a phone, a light switch or anything else electrical while you are inside. Call 911 and the gas utility once you are somewhere else. Those are PHMSA’s instructions and they come before everything else.
Do this now
- Turn off gas appliances if you can do it on your way out without delay.
- Leave the area by foot immediately. Take anyone else with you and stay upwind.
- Call 911 from a safe location — somewhere else, not inside — and then notify the gas utility.
Do not do any of this
- Do not use a telephone or cell phone in the building.
- Do not cause any open flame or other source of ignition — that includes light switches, appliances and anything electrical.
- Do not ring doorbells to warn other people.
- Do not try to operate any valves yourself.
- Do not come into direct contact with escaping gas.
- Do not drive into a leak or vapor cloud while leaving.
And do not call us
We are a referral service. We route calls to independent contractors and we are not an emergency line, we are not on call, and we cannot help you faster than 911 can. Nothing on this site is worth the delay.
Once the utility has made the property safe, there may be work to do. That is when who owns which part of the line starts to matter, and it is what the rest of this site is about.
Why you can smell it at all
Natural gas has no smell of its own. PHMSA notes that gas distribution systems are odorized with mercaptan or a similar chemical, which is why a leak in a house smells of rotten eggs or skunk. Transmission and gathering lines further upstream are not always odorized.
The odorant is added so that people notice. Noticing it is the system working.