Williams Gas Pipeline passes gas from the Canada border all the way south to the Mexico border. The company oversees the interstate natural gas distribution activities for its parent, The Williams Companies. Through its subsidiaries and operating units, Williams Gas Pipeline operates more than 15,000 miles of pipelines (Northwest Pipeline, Transco and 50%-owned Gulfstream. These pipelines have a total capacity of 12 billion cu. ft. of natural gas a day, and account for 12% of the the natural gas consumed in the US. Williams Gas Pipeline serves more than 30 million homes.