The Mayor had to leave the City Hall session right after the Budget 2018 portion earlier Wednesday because he was in signficant pain.
Mayor Watson's Chief of Staff, Serge Arpin says, the Mayor is undergoing surgery tonight to have his appendix removed at the Queensway Carleton Hospital.
As a result, he will be away from City Hall for the next several days.
The information was sent in an email to other city councillors.