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Tucson
Update to Our Customers Regarding Odorant Levels in Southern Arizona
Odorant levels in Southwest Gas's natural gas distribution systems in Pinal, Pima, Gila, Cochise, and Graham Counties have been stabilizing.

Our crews continue to monitor the levels throughout the system and are diligently working to address three areas that are still experiencing low odorant reads, as indicated by the map below.

The first area includes parts of Cochise and Graham Counties, from the New Mexico border to just west of State Highway 90. The second area encompasses parts of Pinal and Gila Counties, from south of Oracle to north of Riverside. The third area starts east of Stanfield and goes to just west of State Highway 85.

Southwest Gas will continue monitoring the odorant level reads, and we 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