The 400,000 residents of Prince George’s County told to boil their water after Monday’s 54-inch water main break in Capitol Heights no longer have to do so.

The Washington Suburban Sanitary Commission lifted the boil water advisory Thursday morning after inspectors found no signs of harmful bacteria in water samples. The advisory had been in place since Monday afternoon.

"This was certainly an inconvenience for our customers and we appreciate their patience,” WSSC General Manager Jerry N. Johnson said in a statement. 

The agency is still asking residents to run all cold water taps for five minutes before returning to normal habits. The agency is also recommending that customers flush refrigerator water lines and dispose of any recent ice made, according to a news release.