Emergency? Call 1-800-ALLIANT (800-255-4268)

Natural Gas Leaks

Stop think safe

Reporting Gas Odors and Emergencies

Anytime you suspect a natural gas leak, you should react like it’s an emergency. Although rare, natural gas leaks can be dangerous and result in an explosion.

There is no charge for a leak investigation.


  • Do you smell an unusual odor, like a rotten egg?
  • Do you hear blowing or hissing?
  • Do you see unexplained dead or dying vegetation?
  • Do you see bubbles coming from the ground - land or water?


  • Do not try to find or repair the leak.
  • Leave the area immediately and keep others away until Alliant Energy allows you to return.
  • Do not start vehicles, turn on lights, or use telephones.
  • Call 1-800-ALLIANT (800-255-4268) from a remote location.
  • If you can hear gas hissing or blowing, call 911.Use your nose

Natural gas is colorless and odorless.

Alliant Energy and other utilities add Mercaptan to natural gas to give it a distinctive pungent odor. This allows customers to detect even the smallest leak.

Learn how to spot a natural gas leak

Alliant Energy periodically sends its customers a special Scratch N Sniff paper in their bill. This specific piece of paper is specially made to smell like the natural gas you would find in a home or business. If you would like to order a copy of this piece of paper, fill out the request form.