Safe Gas Lines

Homes and businesses built after 1990, or those that have had natural gas outlets added since then, might use corrugated stainless steel tubing (CSST). If the CSST is not bonded properly, there is a risk that a lightning strike to the structure could travel along that natural gas piping system and trigger a gas leak or fire.

Call DC Gas to inspect your building or home for CSST if you aren’t able to do so yourself. If we find CSST, our technicians will inspect it to be sure it’s properly bonded for your safety.

Excess Flow Valves


If you smell rotten eggs, leave the area and dial 911 to report an emergency or call DC Gas at 256-845-3731 to report a possible natural gas leak.

DC Gas customers can request that we install an excess flow valve (EFV) on your natural gas service line for added safety.

An EFV is designed to cut off the flow of natural gas automatically whenever a service line is damaged (such as by an excavation accident). This may reduce the risk of a natural gas fire, explosion, personal injury and/or property damage. (See our EFV Policy)

Please note, an EFV does not protect against a slow leak.

If you would like us to install an EFV on the natural gas service line to your property, call DC Gas at 256-845-3731 to schedule a date for installation. This service averages a cost of about $600 for DC Gas customers, but it will vary from property to property, depending on how difficult the installation is.

When you request an EFV, we will provide you the actual cost before to installation. We cannot install an EFV on some service lines due to high gas flow, low pressure or for other reasons. If you request an EFV and we cannot accommodate you, we will let you know.

For more information about this service or to request an EFV installation for your property, please contact DC Gas at 256-845-3731.