Pipeline upgrade to secure Peninsula's water supply

South East Water has completed the 4.4 km Portsea to Sorrento water pipeline upgrade along Point Nepean Road, securing a safe and reliable water supply for locals and visitors — now and into the future.

Originally laid by the army in the 1940’s, the 300 mm diameter concrete pipes  serviced the Point Nepean Quarantine Station. Over time, the aging pipes deteriorated, increasing the risk of disruptions.

South East Water’s General Manager Liveable Water Solutions, Charlie Littlefair, highlighted the benefits of the upgrade for the community.

“This upgrade won’t just enhance the reliability of the water network; it’ll also support the growing needs of the Portsea and Sorrento communities. By rejuvenating this vital pipeline, we’re helping to significantly reduce the risk of bursts and faults,” Mr Littlefair said.

To reduce impacts on the community, cultural heritage, and the environment, South East Water adopted an innovative trenchless construction approach.

The project team overcame unique challenges, including varying pipe thickness, depth, horizontal alignment, and a smaller-than-expected internal diameter. 

South East Water and delivery partner Service Stream developed custom equipment to split the old pipe and re-engineered the network to use the existing alignment. This approach allowed for a sustainable and efficient renewal.

Crews are now restoring impacted areas and will complete this work over the next month. Residents and visitors may still see activity along Point Nepean Road during this time.

Whilst the main alignment of the pipeline is now complete, crews will return to the site in February 2025 for approximately one week of work on Melbourne Road and Point Nepean Road to finish the project.

Building on the successful completion of the Portsea-Sorrento 4.4km pipeline, South East Water remains dedicated to upgrading water infrastructure in the region. 

Plans for the next phase of Peninsula watermain upgrades are underway, ensuring a safe and reliable water supply for the community.

For more information and project updates, visit Upgrades and projects | South East Water