Our Drinking Water Sources

Drinking water sources within Hunter Water's area of operations include dams, ground water and rivers.


Grahamstown Dam

The Lower Hunter's largest drinking water supply is Grahamstown Dam, which is located close to the townships of Raymond Terrace and Medowie. Water in the dam is supplied from the Williams River, together with run-off from the dam's catchment area and rainfall directly onto the dam's large surface area.

Chichester Dam

The Lower Hunter's second largest drinking water supply is Chichester Dam, located at the base of the Barrington Tops National Park World Heritage Area.

Ground Water

Tomago Sandbeds

The Tomago Sandbeds groundwater catchment provides an important source of water and is used to supplement our dams and rivers, for example during times of drought.

Tomaree Sandbeds

The Tomaree Sandbeds groundwater catchment is primarily covered by the Tomaree National Park and supplies the Tomaree Peninsula.


Paterson and Allyn River

The Paterson and Allyn River Catchment begins in the pristine World Heritage Listed Barrington Tops National Park and the Chichester State Forest.

Public Access to Dams and Catchments

To protect drinking water quality, public access is not permitted on either Grahamstown or Chichester dams. Access is also restricted into the catchments of both dams as well as the Tomago and Tomaree Sandbeds. Click here for more details.

Where does your water come from?

Hunter Water provides drinking water to over half a million people in the Lower Hunter and consistently receives a perfect scorecard from the Australian Government's Australian Drinking Water Guidelines.

A safe and reliable water supply begins with a healthy catchment environment.

Enter your postcode or suburb below to find out what catchment your drinking water comes from.

  • Dam
  • River
  • Sandbed