Third party damage is the most common natural gas related problem reported by Puget Sound Energy. This damage typically occurs when contractors dig into gas lines. Puget Sound Energy works closely with local fire departments in responding to these incidents. Additionally, they are training contractors in system design so that they will be more aware of where pipelines are likely to be. Individual customer systems are vulnerable to flood damage and earthquake damage.
Floods can put pilot lights out which can lead to leaking.
Earthquakes can cause water heaters to fall over causing leaking or fires. Puget Sound Energy is attempting to educate the public with regards to water heater safety, encouraging customers to strap down water heaters and consider the option of earthquake protection valves which stop the flow of gas when the earth shakes. King County is also vulnerable to energy shortages. Natural gas shortages are rare but tend to occur during cold weather. These shortages are a function of infrastructure and demand.