WATERTOWN, N.Y. -- Recent water samples came back positive for low levels of Legionella at Samaritan Medical Center.

However, hospital officials say they don't think there's a big concern. Staff has been working to fix the issue in the building where the bacteria was found.

Legionella can cause a severe form of pneumonia called Legionnaires' disease. No cases of the disease have been reported.

Additional water testing was done Monday.