 There's also a chance of severe storms this afternoon. Right now, 91 degrees in northwest. Feels like it's 96 with the humidity. You can go ahead and drink tap water to cool off today. The boil water advisory for all of D.C. and most of Arlington was lifted hours ago. WTOP's Neil Augenstein is learning more about what the problem was. The algae bloom in the Potomac and the Washington Aqueduct sedimentation ponds was clogging filters.