2016 Uni-Directional Flushing Program

The City of North Bay Water Distribution & Collection Staff will be conducting Uni Directional Flushing of the Water Distribution System (water main flushing)this week. 

Every year the City conducts a Uni-directional Flushing (UDF) Program. This process is considered to be one of the best ways to preserve high water quality and maintain the reliability of the water distribution system.

The UDF program involves closing valves in a specific sequence to create water movement in one direction while opening specific hydrants at the end of that sequence. This technique allows higher water flow velocities by isolating certain sections of water mains. The higher water velocity allows for better scouring of the pipes and will use 40% less water in the flushing process than conventional flushing methods. Flushing pipes at higher velocities will dislodge and remove mineral deposits, biofilm and sediment that accumulate in the water mains.

Our crews will be in the Graniteville/Queensway area this week. The staff will be going block by block in a given area and will inform Public Works Dispatch each day as to where they will be flushing and what areas will be affected.

Water users may experience low water pressure and/or cloudy water while the flushing is going on in your area. Once the flushing stops, your water pressure will return to normal and the cloudy water will dissipate.

We ask that motorists exercise caution when driving in areas where City crews are working/flushing water mains.

If you have any questions or concerns, or just want to verify that the staff is flushing in your area, call Public Works Dispatch @ 705-474-4340.