From DC Water:
“DC Water Lifts Boil Water Advisory for all affected customers – Effective 11:30 a.m. March 7, 2014. It is no longer necessary to boil your tap water or consume bottled water
Customers in the previously affected portion of NW Washington, DC can use tap water for all purposes. Please see the interactive map at www.dcwater.com to review the boundaries of the previous impact area. DC Water lifts the Boil Water Advisory after confirming that the drinking water meets water quality safety standards for this type of event. DC Water tested water samples from multiple sites, and at different times, in the impact area and has verified that there is no risk of water contamination from the loss of pressure. The pressure loss occurred on March 5, 2014 after a power outage at the Ft. Reno Pump Station. It is no longer necessary to boil your tap water or consume bottled water.
During this event, DC Water worked closely with the Environmental Protection Agency, its partners in the District of Columbia and the Metropolitan Washington region to communicate with the public and quickly restore water service. “This boil water advisory was issued out of an abundance of caution,” said DC Water General Manager George S. Hawkins. “Though we recognized the possibility for contamination was slim, we erred on the side of caution to put our customers’ health and safety first. We sincerely appreciate everyone’s patience while we took the necessary time to ensure the safety of the water.”