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Tucson
A Message to Our Customers Regarding Odorant Levels in Southern Arizona

Southwest Gas crews have been closely monitoring the natural gas pipeline system in our Southern Arizona service territory impacted by low odorant levels, and continuous progress has been made.

Acceptable odorant levels have been reached throughout our system with the exception of those in the area of San Manuel where levels continue to stabilize.

Our on-going efforts include monitoring the levels throughout the system as we diligently work to address the remaining area that is experiencing low odorant levels. (Please see the map below for reference.)

We also advise our customers and the public to be aware of the following:

1) Do not rely exclusively upon your sense of smell to detect the presence of natural gas which under proper conditions smells like rotten eggs.

2) Be alert to other signs of a potential leak, including:

  • hissing or blowing sounds
  • standing water continuously bubbling
  • dirt or water blowing in the air
  • decay in vegetation

For those individuals who are performing work on natural gas piping or are installing natural gas appliances, please click here for important safety information.

For any work that requires purging of natural gas lines, such as the installation of new gas lines or the installation of certain appliances, it is essential that purging operations be performed properly, either by:

1) Directing purged gases to a safe location outdoors and away from people, structures, or ignition sources; or

2) Directing purged gases to the indoors or the outdoors, and monitor the point of discharge with a combustible gas detector.

Failure to follow these instructions on purging could result in injury and property damage resulting from fire or explosion. Additional information on purge safety can be found in the 2012 edition of the National Fuel Gas Code.

Click here for a pdf version of this map.

Low Odorant Alert