The Dartmouth Police Department remains closed after Legionnaires' disease was found in the station's hot water system.
Police said that dispatch and communications, including 911 emergency calls, were being run out of mobile command unit in the station's parking lot and that there hasn't been any disruption in service.
The department was closed Friday night after water samples tested positive for the bacteria.
Police said a Dartmouth police officer who was hospitalized with the illness about a month ago has returned to work.
Police said water testing will continue and that no date has been scheduled for the building to reopen.
The Legionella bacteria is found naturally in warm water but it is not transmitted from person to person.