Williamtown Water

Overview and Contact Us

South Wallsed Water Supply


Hunter Water is providing a water reticulation scheme to over 160 properties within the Williamtown Contamination Investigation Area, as defined by the NSW Environment Protection Authority (EPA).

The scheme is funded by the Commonwealth Government and will provide access to safe drinking water for eligible properties.

The scheme includes the installation of over 9 km of new watermains in the Salt Ash area, and domestic plumbing works to directly connect individual homes and businesses to the reticulated water supply.

Properties that are being connected under the project include residences, businesses, a primary school, a commercial area, and community and tourism facilities.


For more information on PFOS/PFOA and Hunter Water see PFOS and PFOA. For information about the drinking water supply see water quality.

Contact Us

For more information please contact the Project Team by email or call 1300 657 657 during business hours. For after-hours emergencies call 1300 657 000.

Properties outside of the Investigation Area

Hunter Water is providing access to safe drinking water to properties inside the Williamtown Contamination Investigation Area, as defined by the NSW Environment Protection Authority (EPA). Properties outside of the Investigation Area cannot be connected to the water supply as part of this funded project.

Property owners outside the Investigation Area have the option of funding their own connection to the water supply. The cost to the property owner will vary depending upon the proximity of an existing suitable water main and other factors. More than 9 kms of new water mains are being installed as part of this project, bringing access to Hunter Water's supply closer to many properties.

If you are interested in connecting your property which is outside the Investigation Area there is a six step process.

Step 1: Apply for a water main extension

Apply to Hunter Water for the extension of water mains using our standard 'Application for Developer Services' form.

Step 2: Hunter Water will investigate your application

Each water main application is unique. Factors to be considered include:

  1. Does the property have access to an existing water main, or is a new water main or water main extension required? If connection to an existing water main is possible, and the original installation of that water main was paid for by a developer, new connections to that main may need to pay a contribution to that developer.
  2. How will a new service affect the existing water supply system?

Step 3: Receive a Notice of Requirements letter

Hunter Water will forward a 'Notice of Requirements' letter you. This Notice will detail what you are required to do in order for the water connection to be provided to you.

The requirements for your application may include:

  1. Design and construct water infrastructure specified in the notice necessary to serve your property.
  2. Transfer of the infrastructure to Hunter Water.

You will be required to engage an accredited design consultant to assist with meeting our design and construction requirements (as detailed in our Land Development Manual).

You may be required to prepare a Review of Environmental Factors (REF) to assess the likely impacts an activity may have on the environment. Before commencing the preparation of a REF, you should consult with Hunter Water to discuss your requirements.

Step 4: We Issue an approval letter

Once you have met these requirements Hunter Water will forward a letter of confirmation.

Step 5: Install new water infrastructure

You will need to engage a contractor to install the required water infrastructure to enable the connection.

Step 6: Arrange for connection

You can then arrange connection to the water system at a Hunter Water Customer Centre. Water connection fees are also paid at a Customer Centre.


Frequently Asked Questions (FAQs)

Answers to Frequently Asked Questions will be updated based on questions asked by the community. To see the current list of FAQs click here.

If you need information about site containment backflow prevention please click here.


Williamtown Contamination Investigation Area

The investigation area has been defined by the NSW Environment Protection Authority (EPA). To see a map of the Williamtown Investigation Area click here.

Before you download the below area maps please note they are in large format (each approximately 2MB).

Customer Connections

Private Property Connections

Over 160 properties are being connected to the Hunter Water supply as part of the project. This includes a range of residential, business and community land uses. 

Each property has unique domestic plumbing works required and Hunter Water is working with each property owner to meet their requirements.

The Commonwealth Government is covering the cost of the private plumbing work, and Hunter Water is coordinating the process, in order to make connections more streamlined and cost effective for owners. The works are being undertaken by a panel of plumbing contractors.

Property owners may choose to connect the new water supply directly to their existing system or to an external tap or tank. All properties will be assessed for backflow prevention requirements.

Property owners who have already connected as part of the project and who have incurred costs for plumbing are asked to keep their receipts and call the RAAF Base Williamtown Environmental Investigation on 1800 011 443.

Customer Process for Connection

If you have advised Hunter Water that you are interested in connecting, and you have an eligible property, we will contact you to make arrangements for the installation.

For an overview of the process for installing pipework on your property, please see the Customer Connection Process Flowchart.

Some properties may require additional backflow prevention. For more information regarding backflow prevention, please see the Backflow Prevention FAQ.

If you have a specific timing needs, please call to let us know.

Watermain Construction

Watermain Construction Update

The project involves the construction of over 9 kms of new water mains infrastructure in Salt Ash.

We have installed mains on Nelson Bay Road, and along residential streets. Underground pipework from the mains has been taken up to the boundaries of all eligible properties to enable connection as part of the current project, or later at the convenience of property owners.

Management and handling of soil and groundwater has been undertaken in accordance with an approved Project Management Plan, and we are carefully restoring construction sites.

The contractors for the mains construction work were Eire Construction Pty Ltd (residential streets) and Mullane (Nelson Bay Road).

If you have any questions or concerns about the work on-site please call Hunter Water on 1300 657 657. For after-hours emergencies call 1300 657 000.

Latest News

Latest News

We have finished the project of installing drinking water infrastructure in the Williamtown Investigation Area. This includes construction of the new mains in Salt Ash. Construction sites associated with the mains are currently being restored and revegetated.

We are now project managing the private plumbing connections to the new water supply on behalf of the Commonwealth. This involves meetings with property owners to determine the technical needs and make individualised arrangements.

Connections in Salt Ash will occur on a property by property basis. 

Fast Facts

Project Location
Project Duration
Infrastructure completed June 2017, private connections until October 2017
1300 657 657

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