A low level of Legionella bacteria was discovered in an area of Samaritan Medical Center's water system.
That's according to the Watertown Daily Times, which reports that the bacteria was discovered inside the oldest section of the hospital in Watertown.
Officials said they have already replaced old and infruquently used valves and have also started a daily flushing of the lines.
Legionella can led to a respiratory disease and potentially even to a bacterial pneumonia.
Samaritan says the levels were low and that it has sent out more samples for testing and hopes to have the results back by Friday.