Normanville to Wirrina Cove Water Infrastructure Upgrades

Together with our delivery partner, the McConnell Dowell Diona Joint Venture (MDJV), SA Water is planning a large water infrastructure upgrade in Adelaide’s southern region. This program of works includes construction of a new trunk main from Normanville to Wirrina Cove, water storage tank and pump station. These upgrades will strengthen network stability, improve water quality, and support long-term growth in surrounding communities.

The proposed trunk main is expected to follow Main South Road with supporting infrastructure. The new storage tank at Wirrina will maintain customer levels of service during peak demand periods and provide additional operational flexibility across the network.

SA Water customers at Wirrina Cove will be connected to SA Water’s Myponga drinking water system after these changes.

When it’s happening

Early site investigations

To help refine the proposed alignment and final design, investigation works will commence in December 2025. These activities will include:

• drone surveying along the potential trunk main corridor
• topographical and geotechnical surveys where required
• access into the surrounding road reserve and vegetation areas

If at any stage property access is required to complete investigations, we will contact landholders directly to discuss arrangements prior to any work occurring.

Construction Timeframes

This project is still in the early planning phase.

Pre-construction activities are expected to continue throughout 2026, with main construction forecast to begin toward late 2026 into 2027 (subject to approvals and technical requirements). More detailed timing will be shared as planning progresses.

Keeping you updated

We appreciate your patience and cooperation during these essential works. If you have any concerns or require assistance, please contact me on the details below.