Gas safety

Smell gas? Move fast.

Raw natural gas is colorless and odorless. As a safety precaution, Alliant Energy adds a harmless odorant to the natural gas to give it the distinctive rotten egg smell. Natural gas is lighter than air, so it will rise and disperse if allowed to vent freely.
Although rare, natural gas leaks can be dangerous and result in fire, explosions, injury or death. If you suspect a leak, call 1-800-ALLIANT (800-255-4268) immediately. We will investigate for free.

Learn the signs of a leak and what to do.

Signs of a leak

  • Smell the odor of rotten eggs. If you don’t know the scent, contact us for a free scratch-and-sniff card.

request a free scratch-and-sniff card

  • Hear hissing, roaring or whistling sounds near a gas appliance, meter or pipeline.
  • See dead or dying vegetation where the surrounding area is green, blowing dirt or bubbling water in a puddle, river, pond or creek.

Steps to staying safe during a gas leak

Anytime you suspect a natural gas leak, you should react like it’s an emergency.

  • Leave the area immediately and evacuate everyone from the home or building.
  • Go to a remote location and call Alliant Energy at 1-800-ALLIANT (800-255-4268).
    • We’ll investigate the leak for free. Do not return until we confirm it is safe.
    • If gas lines or equipment are severed, resulting in blowing gas, call 911.
  • Don’t stop to look for the leak or open windows.
  • Don’t use anything that might create a spark, such as a cell phone, light switch or garage door opener. These can ignite gases or vapors. 

McKenzie the superhero

McKenzie was baking cookies with her grandma when she noticed a problem — and saved the day! Watch the video to see what happened.
smell gas video thumbnail

Watch: McKenzie the superhero

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