Ontario Clean Water Agency (OCWA) will be conducting spring flushing in Petawawa between April 17 and May 30, 2025.

What to Expect During Flushing:

If you notice flushing crews in your area, you may experience temporary discolouration to your water. Please take caution and ensure that water is clear before drinking, showering, doing laundry or dishes.

Why We Flush:

Water main flushing is a technique used to clean water distribution pipes and reservoirs of sediment that builds up over time. This is accomplished by strategic manipulation of fire hydrants and valves to force water at high velocities through the system from previously flushed sections of pipe.

The flushing program is conducted annually and also provides the following system benefits:

• Improved water quality;
• Improved system hydraulic capacity;
• Improved system operation by identifying weak or problem areas;
• Improved/restored chlorine residual; and
• Increased life of system components such as pressure reducing valves, line valves, pumps, etc.

How Flushing Affects Your Water:

During the flushing process, low pressure and discoloured water are common. Any discolouration is temporary and is not a health hazard. If you notice any discolouration in your water, run your cold water taps until water runs clear, this should only be done after crews have finished flushing in your area.

Hydrant flushing is an annual requirement under the Ontario Fire Code (O. Reg. 213/07).