Mardi Water Treatment Plant

NSW
Central Coast Council
In progress

Abergeldie is delivering a major upgrade at the Mardi Water Treatment Plant (WTP) for Central Coast Council. This project was awarded following a thorough Early Contractor Involvement process, during which Abergeldie identified value engineering opportunities. The upgrade aims to improve the plant’s capacity to provide safe drinking water, supporting the growth of the Central Coast region while also fulfilling inter-region transfer commitments. The scope includes designing, constructing, testing, and commissioning upgrades to the Water Treatment Plant.

Scope of works

The scope of works involves:

  • The conversion of existing tanks and replacement of mixers.
  • The installation of new systems for flocculation and dissolved air flotation (DAF).
  • The decommissioning and removal of outdated storage and dosing facilities.
  • The installation of new storage, batching, and dosing facilities.
  • Enhancements to the clearwater tank to increase efficiency.
  • Removal and repair of existing pipework and overflow structures.
  • Electrical, instrumentation, and control works associated with the upgrades.
  • Updates to PLC, SCADA, and network hardware and software.
  • Mechanical works associated with the project.

Delivering the upgrade under brownfield conditions

Upgrading the Mardi Water Treatment Plant under brownfield conditions is challenging. The project team is working closely with the plant’s operations team to mitigate disruption to the water supply and the local community. All works to upgrade the Mardi Water Treatment Plant are carefully planned and managed, carefully considering existing infrastructure and operational constraints and ensuring that the works are delivered safely with minimal environmental impact. 

Long-term community benefit

Upon completion, this highly complex upgrade will deliver up to 160 million litres of high-quality drinking water daily, benefiting over 200,000 residents on the Central Coast of New South Wales. This significant enhancement ensures a reliable and sustainable water supply for the community.

This landmark development is supported by a $6.85 million investment from the NSW Government’s Restart Safe and Secure Water Program, along with over $75 million from Central Coast Council, to secure the region’s water future.