Traffic on Weber Street North has been reduced to one lane in each direction after a water main break near Lincoln Road.
City of Waterloo staff could be seen in the area of 133 Weber Street North of the break around 8 a.m. Tuesday, assessing the damage.
Water could be seen running down Weber Street North across from Mackay Crescent.
Some residents in the surrounding area may experience low pressured water, discoloured water and water shut-offs.
In an email to CTV News, the city said repair work should wrap up before 7 p.m. with a contractor working to repave the road Wednesday morning.