LARGO, Md. -- A boil water advisory in Largo has been lifted after a water main break raised concerns about contaminants in the water supply, Prince George's County officials said.
Orders to boil tap water were lifted at 7:30 a.m. Tuesday after a second round of tests found no harmful bacteria in the supply, Washington Suburban Sanitary Commission spokesman Mike McGill said.
A water main rupture on Saturday reduced water across large areas of the county near Largo, which McGill said could have allowed contaminants into the pipes. Tens of thousands of residents were affected, as were schools, where water had to be boiled to prepare food and drinking from water fountains was restricted.
The order to boil water was the second in the sanitation agency's 90-year history.