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Planned work

Cathodic Protection Program

What is cathodic protection?

Cathodic protection is a process that involves attaching a series of magnesium anodes to the outside of a watermain or water service.
 Cathodic Protection

Why are we doing it?

With age, metal pipes corrode and eventually break. Cathodic protection is a progressive technology that reduces corrosion of watermains and water services by transferring the corrosion from the outside of the pipe to a “sacrificial” anode.

Where is cathodic protection being installed?

Next schedule update to be posted in 2018.

Why was my street selected?

The City analyzed the frequency and severity of water main breaks in Ottawa over a five year period. From this analysis, locations were identified and prioritized. 

How is it done?

Work crews drill a series of 30 cm (1 foot) diameter holes on City property and insert magnesium (“sacrificial”) anodes beneath the ground. The anodes are connected together by a wire which is attached to your water service.

Will cathodic protection be added to all watermains?

No, cathodic protection is for metallic pipes. Today, most watermains are made from PVC.

How long will it take?

The installation process only takes a few minutes and the holes are refilled the same day. The disruption to residents and motorists should be minimal. The work is done on the outside of the pipes so the quality of your water is not affected.

When will the work take place?

The work starts in May and finishes in October.

Questions or concerns

Contact the City of Ottawa at 3-1-1 or send an email to:

Work schedule 

The next schedule will be posted in 2018.