Larrakeyah Outfall Closure Plan

13 July 2012

Power and Water will complete works to close the Larrakeyah Outfall this month and flow will be diverted to the Ludmilla wastewater treatment plant.

Power and Water undertook a program of works to ensure the closure of the Larrakeyah sewage outfall is in accordance with the requirements of its wastewater discharge licence.

General Manager Steve McKenzie said the Corporation is committed to progressively reducing the impact of wastewater discharging into Darwin Harbour.

"This has been a major engineering feat with diversion work being conducted under Darwin CBD and construction of rising mains and pumping stations throughout city suburbs.

"The Larrakeyah outfall will be entirely switched off from the end of May this year.

"Work upgrading Ludmilla Wastewater Treatment Plant commenced in November with construction of a three fold increase in treatment capacity well advanced."

The Ludmilla Wastewater Treatment Plant upgrade will provide a much greater ability to cater for wet season flows and also provide for population growth until at least the year 2030.

These works are part of Power and Water’s broader Darwin sewerage treatment strategy that aims to:

  • provide capacity for a growing population and industry base
  • improve the performance of the region’s wastewater treatment and disposal facilities and
  • reduce potential impacts on the environment from sewerage operations.

The Larrakeyah Outfall Closure Plan project supports the elimination of discharging untreated sewage into Darwin Harbour from the Larrakeyah outfall and meets the requirements of Power and Water’s Wastewater Discharge Licence.

Over the next five years the Corporation is also upgrading treatment processes at the Leanyer Sanderson and Palmerston wastewater treatment plants and in addition it has committed to upgrade sewage treatment at East Arm to support development of the Marine Services Precinct.

Ludmilla Wastewater Treatment Plant works
Ludmilla Wastewater Treatment Plant works

Contact: For media queries contact the media unit

Phone: 0417 847 199