Quindalup - Dunsborough 5C and 9A

back to current projects

Project goal:

Complete infill sewerage works in this area


In construction

Delivery Date:


The Infill Sewerage Program is a Western Australian Government initiative that is administered by Water Corporation.

The infrastructure constructed as part of Quindalup 5c and 9a program will allow 206 properties to connect to the central wastewater system, eliminating the potential public health and environmental risks related to the use of septic tanks and leach drains.

Work commenced in October 2018 and is expected to be completed by mid-2019.

Project update - January 2019

To date, we have completed approximately 45% of work including installation of wastewater pipeline along Geographe Bay Road and surrounding areas.

Once all wastewater pipeline and pump station works have been completed, work to install property connections will then begin, followed by reinstatement of all impacted areas.

All work including reinstatements are expected to be completed by mid-2019.

Who to contact

For more information please contact Senior Project Manager, Paul Kilpa on paul.kilpa@watercorporation.com.au or (08) 9420 3332.

For all community-related enquiries please contact Community Engagement Advisor, Jen Woollard via email Jen.Woollard@watercorporation.com.auor call (08) 9420 2651.

For after hours assistance please contact our 24 hour Faults, Emergencies and Security line on 13 13 75.

The Infill Sewerage Program is a Western Australian Government initiative which we administer. It aims to provide sewerage connections to properties where the use of septic tanks poses a risk to public health and the environment.

Infill sewerage is a system of buried pipes that takes wastewater away from residential properties for safe treatment and disposal.

Why are we doing it?

Nowadays, sewerage pipes are usually installed as land is developed and before new homes are built. But, between 1950 and 1975 many areas were developed in WA using septic tanks and leach drains for wastewater disposal.

The Infill Sewerage Program aims to reduce the potential for health and environmental issues by capturing and treating wastewater in a modern and safe way. It also helps with the renewal and modernisation of infrastructure.

What will happen in your area?

We will write to you before any infill sewerage works begin in your area and we will keep you informed throughout the project.

Installing a wastewater system can be disruptive as it involves digging large trenches to lay the sewerage pipes. There may be some temporary inconvenience with access to your property and possible road detours.

Contractors will do their best to minimise any noise, dust and access restrictions, but we ask for your patience and understanding while work progresses.

If we need to work within your property we will do our best to restore it as near as practicable to its original condition.

There is no cost to the landowner for making access to our central wastewater system available and there should be no disruption to water, gas, electrical or telephone services.

How to connect

Once the central wastewater system is completed in your area, you will need to arrange for a licensed plumber to connect your property to the sewer connection point.

We encourage you to connect as soon as possible and you need to connect within 5 years. Find a licensed waterwise plumber.

If you have a septic tank, please contact the health services section of your local council to find out about decommissioning requirements.

How much will it cost?

The cost of connecting to the wastewater system ranges depending on individual property requirements, such as depth and length of wastewater pipes and ground conditions.

We encourage you to contact a licensed plumber to confirm an expected connection cost.

Sewerage rates will be charged once the system is operational and we have notified you in writing of its availability. These rates will be charged whether or not you have connected to the system.

Eligible pensioners can apply for concessional rates or for payments to be deferred. Find out more about concessions for pensioners.


The Infill Sewerage Program is one of the biggest single capital works programs undertaken in Western Australia and is an investment in public health and the protection of our environment.

The program started in 1994, but has been deferred several times due to budget constraints and higher priority water supply projects.

So far the program has enabled approximately 93,000 households across Western Australia to access the central wastewater system.

Contact details

For more information, please contact infill@watercorporation.com.au or call 13 13 95.

back to current projects