Posted on January 8, 2019 January 8, 2019 by WebsiteYellowPages.com WGL Holdings, Inc. 1 2 3 4 50.000 CategoriesUtilities LocationsD.C. Bookmark Contact Information Business Name WGL Holdings, Inc. Address 1100 H Street, N.W., D.C. 20080 Phone Number 703.750-2000 Website http://http://www.washgas.com CategoriesUtilities Post navigationPrevious post: Urban Brokers LLCNext post: Advisory Board Compan