Fairfax County Water Authority (FCWA or more recently Fairfax Water for short) is the main water company in the Northern Virginia region of the United States, and one of the three major water providers in the Washington, D.C. metropolitan area (the other two being the Washington Aqueduct and the Washington Suburban Sanitary Commission). Fairfax Water serves most of the populated areas of Fairfax County, and also serves neighboring communities of Alexandria, Prince William County, Virginia and Loudoun County, Virginia through wholesale agreements. It serves drinking water to 1.5 million people.