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Regional projects

Macquarie-Wambuul Water Security Project

Important information

The Macquarie River Re-regulating Storage Project has been renamed the Macquarie-Wambuul Water Security Project.

Transition to Water Infrastructure NSW

As of September 2021, responsibility for the proposed Macquarie River Re-regulating Storage Project transitioned from WaterNSW to the Department of Planning and Environment’s Water Infrastructure NSW– a new entity established to lead the development and delivery of key government water infrastructure projects and programs across the state.

For project continuity, some key project staff have also moved across and previous WaterNSW contact points (i.e. email and phone numbers) are being forwarded. Water Infrastructure NSW will continue to working closely with communities and stakeholders to identify opportunities that deliver sustainability outcomes to the Lower Macquarie Valley through this project.

About the project

Water Infrastructure NSW is committed to this important water infrastructure project and the required development to complete the Final Business Case, ensuring the project delivers maximum benefits to the community, while minimising impacts to the environment and reducing costs for taxpayers. Focus has been placed on the need to get it right from the outset so we can deliver the best outcomes for communities.

The Macquarie River Re-regulating Storage Project has been renamed the Macquarie-Wambuul Water Security Project. The project will consider a range of alternative and complementary options that will support sustainability outcomes whilst delivering improved water security and resource management within the Macquarie Valley.

As part of the Final Business Case, Water Infrastructure NSW will develop the necessary planning approvals and deliver an Environmental Impact Statement (EIS) that will be publicly exhibited for community comment. Further assessments will be undertaken to inform the EIS involving technical, hydrological, environmental, biodiversity, cultural and socio-economic studies, and further community and stakeholder consultation. The EIS will be prepared in accordance with the Secretary's Environmental Assessment Requirements (SEARs). Public exhibition of the EIS will be made available in accordance with statutory guidelines.

An Environment Protection and Biodiversity Conversation (EPBC) referral was submitted in April 2020. The Australian Government’s Minister for the Environment has decided the proposal requires further assessment and approval under the Environment Protection and Biodiversity Conservation Act 1999 (Cth) (EPBC Act).


Recently, Water Infrastructure NSW applied for additional funding from the Australian Government’s National Water Grid Authority (NWGA) to progress the Final Business Case and Environmental Impact Statement. On 4 February 2022, the Australian Government announced additional funding to support development of a Final Business Case for the Macquarie-Wambuul Water Security Project as part of the Mid-year Economic and Fiscal Outlook.

Stakeholder engagement

In 2022, Water Infrastructure NSW will undertake extensive stakeholder engagement activities to better understand community and stakeholder concerns and to incorporate that feedback as part of the business case process. The project team will be in touch with stakeholders to facilitate these conversations. Studies will also be undertaken during this period and the outputs of these studies will be shared with stakeholders.

Contact us

If you have any questions or need more information about the project or the project activities email us MWWSP@dpie.nsw.gov.au or call 1300 081 047.