 The BPA operates the region's system of electrical transmission lines, including Path 3, a major national transmission corridor running along the eastern side of Arlington towards British Columbia.Cascade Natural Gas and Puget Sound Energy provide natural gas to Arlington residents and businesses north and south of State Route 531, respectively; two major north–south gas pipelines run through Arlington and are maintained by the Olympic Pipeline Company, a subsidiary of BP, and the Northwest Pipeline Company, a subsidiary of Williams Companies.Arlington is served by three telephone companies and internet service providers