How to Recognize and Respond to a Natural Gas Leak Natural gas lines can be buried anywhere, even where homes don't use natural gas. So it's important that EVERYONE knows how to recognize and respond to a natural gas leak. SIGNS OF A LEAK MAY INCLUDE: SMELL A distinct sulfur-like odor, similar to rotten eggs, even if it's faint or momentary. HEAR A hissing or roaring coming from the ground or above- ground pipeline. SEE Dirt or water blowing into the air, unexplained dead or dying plants or grass, or standing water continuously bubbling. IF YOU SUSPECT A NATURAL GAS LEAK: DO... LEAVE. Evacuate the area and inform others to do the same, leaving doors open as you exit. CALL. From a safe location, call 911 and Southwest Gas at 877-860-6020, day or night. A Southwest Gas representative will respond as soon as possible. DON'T... > Smoke or use matches/lighters. > Turn electrical switches, thermostats, or appliance controls on or off. Start/stop engines or use automated garage doors. For more information about natural gas safety, visit swgas.com/safety or call 877-860-6020. SOUTHWEST GAS How to Recognize and Respond to a Natural Gas Leak Natural gas lines can be buried anywhere , even where homes don't use natural gas . So it's important that EVERYONE knows how to recognize and respond to a natural gas leak . SIGNS OF A LEAK MAY INCLUDE : SMELL A distinct sulfur - like odor , similar to rotten eggs , even if it's faint or momentary . HEAR A hissing or roaring coming from the ground or above- ground pipeline . SEE Dirt or water blowing into the air , unexplained dead or dying plants or grass , or standing water continuously bubbling . IF YOU SUSPECT A NATURAL GAS LEAK : DO ... LEAVE . Evacuate the area and inform others to do the same , leaving doors open as you exit . CALL . From a safe location , call 911 and Southwest Gas at 877-860-6020 , day or night . A Southwest Gas representative will respond as soon as possible . DON'T ... > Smoke or use matches / lighters . > Turn electrical switches , thermostats , or appliance controls on or off . Start / stop engines or use automated garage doors . For more information about natural gas safety , visit swgas.com/safety or call 877-860-6020 . SOUTHWEST GAS