Petrie Water Supply Upgrade

Project summary

The Petrie Water Treatment Plant (operated by Seqwater) was built in the late 1950s.

As it would have required a substantial refurbishment to continue to safely supply customers, a more efficient solution was to connect the Petrie Water Supply Zone to the South East Queensland Water Grid and decommission the plant.

At the conclusion of this project about 100,000 residents in Dakabin, North Lakes, Mango Hill, Kallangur, Murrumba Downs, Griffin, Petrie, Lawnton and Strathpine were connected to the SEQ Water Grid for the first time.

Throughout March and April 2018, customers in the above suburbs started receiving their drinking water from the water grid.

Which properties were affected?

You can search an interactive map below using your address. Areas within the coloured zones are included in the overall transition.

Search the map

Schematic of Petrie Water Supply Zone Upgrade

Download: Schematic of Petrie Water Supply Zone Upgrade (PDF)

New Northern Pipeline Interconnector to Boundary Rd Reservoir

New pipeline from Northern Pipeline Interconnector to Boundary Road Reservoir

Unitywater and Seqwater are working together on the Petrie Water Supply Upgrade.

The project involves four construction projects:

a pipeline to connect the Boundary Road Reservoir with the Northern Pipeline Interconnector
a new pumping station and associated network configurations at the Petrie plant as well as pipework reconfigurations and decommissioning of the Kallangur Pumping Station
a new water quality management facility at Boundary Road Reservoir
decommissioning of the Petrie Water Treatment Plant.

About the new upgrade project

Who will benefit from the Petrie Water Supply Upgrade?

The Petrie Water Supply Upgrade will allow about 100,000 residents in the Moreton Bay region to be connected to the South East Queensland Water Grid for the first time. People living in Dakabin, Griffin, Kallangur, Lawnton, Mango Hill, Murrumba Downs, North Lakes, Petrie and Strathpine will be supplied with drinking water primarily sourced from Seqwater’s North Pine Water Treatment Plant rather than the current source supplied from the Petrie Water Treatment Plant.

Why is the upgrade necessary?

Under normal operating conditions, the Petrie Water Treatment Plant is the primary source of bulk water to about 100,000 customers in the Petrie Water Supply Zone including North Lakes, Kallangur and Strathpine. A condition assessment of the plant, which was built in the 1950s, determined it would need a substantial upgrade to continue to supply a safe, secure and reliable drinking water supply to customers.

After considering a number of potential bulk water supply arrangements, it was determined decommissioning the plant and connecting the Petrie zone to the SEQ Water Grid was the most efficient and cost-effective solution.

What is the SEQ Water Grid?

The SEQ Water Grid is an interconnected network of dams, treatment plants, reservoirs and pipelines. It allows Seqwater to move water around the region and in both directions, from the Sunshine Coast to greater Brisbane, to Redlands and south to the Gold Coast.

Will the upgrade affect water security in the region?

Seqwater is developing a plan for providing safe, secure and cost-effective drinking water for South East Queensland over the next 30 years. This long-term plan includes options to provide enough water to sustain household and business needs for growing areas, including the Moreton Bay region. Connecting the Petrie Water Supply Zone to the SEQ Water Grid is part of this plan and it will improve the safety and reliability of water supply to local residents.

What are the steps in the upgrade?

The upgrade involves four separate construction projects:

A pipeline to connect the Boundary Road Reservoir with the Northern Pipeline Interconnector.
A new pumping station and associated network configurations near the old Petrie Water Treatment Plant, as well as pipework reconfigurations and decommissioning of the Kallangur Pumping Station.
A new water quality management facility at the Boundary Road Reservoir.
Decommissioning of the Petrie Water Treatment Plant.