Project goal:

To reline old wastewater pipes, protecting the local wastewater system, homes and environment.


In construction

Delivery Date:


What's happening?

Sewer relining is an ongoing program to renew ageing wastewater pipes. The work is carried out by our authorised contractors to ensure our central wastewater system continues to be safe and reliable. Where possible, pipes are relined using trenchless technology.

This means we won’t need to dig anything up to replace the pipes, which will help minimise the impact on the local community. Check out the tab ‘How does it work’ for more information.

Where is this happening?

Work areas with relevant commencement dates:

  • Northam: August 2022 - To view aerial maps with street names, click here.

Why is this work taking place?

Relining old wastewater pipes is important to protect the local wastewater systems and the health of the community and environment and will extend the life of this important infrastructure by at least 50 years.

When is this happening?

Sewer relining is an ongoing project which started over 10 years ago to renew ageing wastewater pipes across the state. 

How will this impact the community?

Work activities

Nearby residents may notice more activity in the area, noise from generators and vehicles and temporary odour. Work will be approved in advance by your local government authority.

Where required, traffic management will be in place to direct people safely around the work area. Generally, we will be in one area for no more than six days at a time as we progress work along the wastewater route.

Access to property

Contractors will be working in both verges and/or roads and may work in the boundary of private properties. If crews require access to your property, we will contact you directly to discuss the work and arrange entry. They will only require access to your back or front yard and will not need to enter your home.

During the work

If you experience any odour in your bathroom, flush your toilet and pour water down the floor drain. Where possible, please close all toilet covers during this period.

If wastewater does overflow out of your toilet, please notify the relevant contractor immediately using the contact details provided below. The contractor will assess the issue, work with you to organise a clean-up and notify the Department of Health.

Who can I contact?

For general project enquiries, contact Community Engagement Advisor, Sharon Carey via email on

Sewer relining step 1

Pipes are checked via CCTV

To determine exactly what we need to do to fix them.


Sewer relining step 2Pipes are cleaned

High pressure water is jetted through the pipes. It may cause some gurgling or splashing from your toilet. We therefore advise to keep the toilet lid down. If water does spurt out of the toilet, please contact the Interflow Manager immediately.


Sewer relining step 3Pipes are relined

A plastic strip is wound into the old pipe by a machine to form a new pipe.


Sewer relining step 4New pipe is connected

Lateral lines are reconnected to the new pipe and junctions are sealed to protect the new pipe. This opens the connection to provide access to the system.


Sewer relining step 5

Pipes are checked

This ensures that the job has been done properly. If we find any issues we'll come back and fix it. We may need to return to the area to repeat the above steps.

Boundary trap investigations and installations
Sewer relining step 6

Boundary traps are found a the point of connection to the central wastewater system and stop gases from entering private sewers. We may need to enter the boundaries of your property to complete this work. Installation involves small-scale excavation and we will reinstate any private property we disturb during this process.

Contact us

24 hour Faults, Emergencies and Security Line

Phone icon 13 13 75