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How to Recognize a Natural Gas Leak

Smell – The distinctive odor of rotten eggs (You may not smell the odor if you have a diminished sense of smell, the odor is masked by other scents or it has faded.)

Look – Discolored or dead vegetation, disturbed soil or a dense mist above the pipeline

Listen – A loud and high-pitched sound

Act – If you smell or suspect a natural gas leak ...


Evacuate everyone from the building or site immediately and then call NJNG from a safe location at 800-GAS-LEAK (427-5325). Let us know where you are. 

  • Remove cigarettes or other smoking materials from the area, and then promptly extinguish them.
  • Do NOT use telephones, cellular OR cordless, on the premises where the leak is suspected.
  • Do NOT activate light switches, electrical appliances, flashlights, doorbells or even garage door openers as electrical appliances and devices could cause a spark.
  • Do NOT re-enter the building until NJNG has declared it to be safe.

For your safety, we promptly investigate suspected natural gas leaks as a FREE service 24 hours a day, seven days a week.

Click here to download NJNG’s natural gas leak safety brochure, It Smells Bad for a Good Reason, written in both Spanish and English. To request a FREE print copy of this brochure, send an e-mail request or call 800-221-0051