Annual Juan de Fuca Water Main Flushing Program

The Capital Regional District's Integrated Water Services Water Main Flushing Program includes the municipalities of Colwood and Langford.

The next spring water main flushing program will commence on January 9, 2023 in various areas of Colwood and Langford.

Why do we flush our water mains?

Water main flushing program is a technique used to clean water distribution pipes and reservoirs of sediments that build 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 (source to extremities). The flushing program is conducted yearly 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.
  • Increased life of system components; including, pressure reducing valves, line valves, pumps, etc.

How does water main flushing affect your water?

During the flushing process, low pressures and discoloured water may be experienced for short periods. Any discolouration is temporary and is not a health hazard. CRD staff collect and test water samples daily throughout the entire distribution system to ensure that the water is safe for consumption. If any discolouration is noticed, residents are asked to open their cold water taps (after flushing hours) and allow it to flow until the water becomes clear. Residents with a weakened immune system should reference the following HealthLinkBC information:

How do I get notified about main flushing in the Juan de Fuca system?

The CRD advertises the Juan de Fuca water main flushing program in local newspapers in advance and throughout the flushing period. The CRD also updates its website with updates indicating the roads scheduled for water flushing on a weekly basis. A map indicating areas scheduled for water main flushing this Spring season is available below:

Do you require advance notification?

Call CRD Integrated Water Services at 250.474.9619 for additional information about water main flushing in the Juan de Fuca area.

Commercial establishments in the Westshore Communities, such as laundromats and beauty salons can receive advance warning of flushing in their area if a request to be notified is received.

Do other municipalities in the Greater Victoria Area have similar Water Main Flushing Programs?

Water main flushing is also conducted annually by six other drinking water distributors in Greater Victoria. To receive advance warnings or further information about the annual flushing programs within those municipalities, please call:

Municipality Name Telephone
Central Saanich 250.544.4224 ext 221
North Saanich 250.655.5460
Oak Bay 250.598.4501
Saanich 250.475.5481
Sidney 250.656.1034
Victoria/Esquimalt 250.361.0400

Contact Us

For further information, please contact:


General Inquiries
Tel: 250.474.9619 email

Todd Scaber, Manager, Water System Ops
Tel: 250.474.9626
Cell: 250.883.0605 email

Water Quality

Christoph Moch, Manager Water Quality Ops
Tel: 250.474.9603 email

Jessica Dupuis, Water Quality Officer
Tel: 250.474.9643 email