Farley WWTW

The Farley Wastewater Treatment Works serves parts of Maitland (the rural areas and the western part), as well as: 

  • Aberglasslyn
  • Bolwarra
  • Gillieston Heights
  • Largs
  • Lorn
  • Oakhampton
  • Phoenix Park
  • Telarah
  • Rutherford

It currently treats 5.6 megalitres per day of effluent and can handle wastewater from a population equivalent to 50,000 people.

Treatment Process

The Farley WWTW is designed to remove nutrients (nitrogen & phosphorus) and to provide a high level of disinfection.

The tertiary treatment of the wastewater by the following process:

  • inlet works including screening and grit removal
  • extended aeration activated sludge (carousel tank)
  • two secondary clarifiers
  • chemical dosing to remove phosphorus
  • two sludge lagoons which are periodically emptied/dewatered
  • two maturation (tertiary) ponds.


Recycling & Reuse

The treated effluent is:

  • used by a nearby farmer
  • discharged to Fishery Creek which flows into Wallis Creek and then eventually into the Hunter River.

All biosolids produced at the Farley Wastewater Treatment Works are beneficially used for mine site rehabilitation and pasture improvement projects.

Hunter Water recycles approximately 5091ML (5091 million litres) per year. Learn more about our recycling and reuse initiatives.