Watermain Replacement

Every year, the Delta undertakes an annual watermain replacement program to ensure the municipality's water distribution system operates as efficiently as possible and residents have access to clean, safe drinking water. Sites are selected based on a number of factors including age of the watermain, frequency of leaks and other planned infrastructure improvements.

Watermain Construction Process

The watermain replacement construction process includes a number of stages. If the watermain in your neighbourhood is being replaced, you can expect to see the following typical process stages occur.

  • The construction crew will carry out preparations for installing the new watermain
  • Please note that some disruptions to the municipal water supply may occur
  • The construction crew will install the new watermain pipe, valves and fittings
  • The construction crew or an appointed testing consultant will perform compaction testing of the trench backfill, pressure testing, chlorinating and flushing of the watermain
  • Bacteriological testing will be done; this could take up to one week depending on the outcome of the test results
  • Once the watermain has been approved for service, the construction crew will install a new water service from the new watermain to your property line
  • The old water service shut off located at your property line will be replaced with a water service box
  • All trenches will be restored with similar materials as those removed, and the general working area will be restored to original or better condition. The connection of your service to the new main will result in a temporary disruption to your water supply; however, you will be notified in advance of this work being done
  • The construction crew will take the old main out of service
  • Final asphalt pavement restoration will not take place prior to 90 days after watermain installation. This period of time allows for any consolidation of backfill trench materials prior to final asphalt restoration.  

Residents should be aware that Delta's watermain, and the municipal service to each property, are typically being replaced due to age. You may wish to have your private piping inspected by a qualified person when the municipal system is replaced. 

Contact Information

If you have any questions regarding the process described, please contact the Engineering Department at 604-946-3260.

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