 Now, if you are looking to get down to the National Mall for the fireworks, Metro Rail and bus trips are now free. Parking at Metro Lots also free for the rest of the day. Metro Rail will run until midnight and is operating on a Sunday schedule. 706, you can go ahead and drink that tap water. The boil water advisory for all of D.C. and most of Arlington has been lifted. WTOP's Neil Augenstein is learning more about what the problem was and how it was dealt with.