📞 Call the City of Flint Water Department at (810) 766-7202 to report any changes in your water. The City of Flint has heard from residents who are concerned about discolored water flowing from a fire hydrant during a Fire Department operation on Jamieson St. Anytime firefighters open a fire hydrant, they need to flush out stagnant water and debris in the fire hydrant barrel and pipe before using it. After flushing, the hydrant delivers the same high quality water that flows into homes and busi