There will be no swimming at Birch Cove Beach until further notice.
Halifax Regional Municipality says recent tests at the Lake Banook swimming spot indicate bacteria levels have exceeded Health Canada guidelines.
"High bacteria levels can be caused by a number of factors, including weather conditions and waterfowl," they said in a news release.
The water quality at all supervised beaches in HRM is regularly tested in the summer months.
As of Thursday afternoon, Albro Lake, Kinap, Oakfield, Government Wharf and Kinsman beaches also remain closed.
Residents can check the status of their favourite municipal beach online.