Hart will take office following a ceremony at 5:30 this evening along with two new city council members.
The 44-year-old Hart was first elected to serve on the council in 2007 and he was reelected in 2011.
Back in November, there was a five-way race for mayor that went to a run-off on December 1st. In the run-off, Hart beat former Mayor Tim Hurley to replace three-term Mayor Buck Clark.
Hart says he hopes to be known as a fair, hard-working mayor who leads the city in a positive direction.
By Elwin Huffman, KOEL, Waterloo