Maylands Lakes Water Quality

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The City of Bayswater is committed to improving the water quality, natural habitat and amenity around the lakes. The lakes are home to turtles, frogs, and a range of birdlife including Cormorants.

Following long-term monitoring by GHD and advice about management, Council recently adopted a plan, based on this scientific advice and community input, to dredge parts of Lake Brearley and install mechanical mixers in Lake Bungana and Lake Brearley.

The plan also includes a fauna study, a management and maintenance plan, water monitoring, and community involvement.

Read the GHD Monitoring Report and the Management Options Report, and Council decision.

The City will progressively:

  • Install mechanical mixers to improve oxygen levels in Lake Brearley and Lake Bungana
  • Dredge Lake Brearley in shallow midge breeding areas
  • Undertake 3D modelling to see how the water moves around the lakes and determine the best location for the mixers
  • Complete a fauna study of the lakes and surrounds
  • Monitor the health of the water
  • Provide opportunities for community education and involvement
  • Develop a plan to progressively transform stormwater inlets near the lakes i.e. rain gardens
  • Prioritise the restoration of lake foreshores by planting species endemic to the area, and maintain and replace infrastructure

Latest News.

The City has signed a contract with Apex Envirocare to undertake dredging of Lake Brearley. Dredging is scheduled to commence on 29th November 2021. The dredge being used is significantly more powerful than the dredge used on Lake Bungana. City officers will work with Apex Envirocare to monitor the volume of sediment removed and the area of Lake floor dredged.

City officers are continually monitoring emerging technology and innovative options to improve water quality and reduce midge at Maylands Lakes. Recently this has resulted in the City commencing a 12 month trial installation of ultrasonic units in Lake Brearley. The devices are solar powered and emit ultrasonic waves that cause gas pockets in algae cells to collapse resulting in the algae sinking and dying. There have been no reports of harm to humans, fish, birds and other fauna due to ultrasonics. The installation of the units is an additional action being taken by the City to complement the other initiatives that are already planned and being actioned.

The contract has been awarded for the supply and installation of the mixers. Preliminary site works for the provision of electrical supply to the mixers has been completed. The mixers are scheduled to be shipped from Queensland in September.

The raingarden at Tourer Court is now complete and will reduce some of the nutrients flowing into Lake Brearley.

A focused regime of midge and mosquito treatment was undertaken this past summer and feedback and monitoring indicated midge levels were lower. The same treatment approach has commenced early this year in response to midge levels.

Clean fill has been placed into the corner of Lake Brearley adjacent to Sopwith Elbow and Tourer Court which suffers from reduced circulation and tends to collect the floating algae. Final levels of this fill will be achieved once the water level reduces – we are targeting fill level to be approximately at the low water mark. This area will be planted with sedges once the final fill levels are achieved.

The floating wetlands have been removed from Lake Brearley as they were not thriving and they have been relocated to Lake Bungana, Brickworks Lake and the pond at Bardon Park.

Approximately 40 sedges have been installed along the hard wall in the south eastern corner of Lake Brearley. Installation of plants in these locations is challenging as there is limited fill and primarily limestone rock. City officers are trialing a new installation technique to determine its effectiveness. If it is found to be effective, there are a further 300 sedges to be planted once the water levels reduce.

In addition to the above actions, the City continues to monitor the latest advances in technology and water management approaches to ensure the most appropriate and impactful actions are taken at Maylands Lakes.

Three successful planting days have been held this planting season as follows:

  • 30 May 2021 at Lake Brearley in partnership with Friends of Maylands Lakes
  • 7th August 2021 at Brickworks Stream in conjunction with Friends of Maylands Lakes
  • 15th August 2021 at Brickworks Reserve in conjunction with Friends of Maylands Brickworks.

It was great to see so many community members participate in the planting days and a total of approximately 5000 plants were planted.


The City of Bayswater is committed to improving the water quality, natural habitat and amenity around the lakes. The lakes are home to turtles, frogs, and a range of birdlife including Cormorants.

Following long-term monitoring by GHD and advice about management, Council recently adopted a plan, based on this scientific advice and community input, to dredge parts of Lake Brearley and install mechanical mixers in Lake Bungana and Lake Brearley.

The plan also includes a fauna study, a management and maintenance plan, water monitoring, and community involvement.

Read the GHD Monitoring Report and the Management Options Report, and Council decision.

The City will progressively:

  • Install mechanical mixers to improve oxygen levels in Lake Brearley and Lake Bungana
  • Dredge Lake Brearley in shallow midge breeding areas
  • Undertake 3D modelling to see how the water moves around the lakes and determine the best location for the mixers
  • Complete a fauna study of the lakes and surrounds
  • Monitor the health of the water
  • Provide opportunities for community education and involvement
  • Develop a plan to progressively transform stormwater inlets near the lakes i.e. rain gardens
  • Prioritise the restoration of lake foreshores by planting species endemic to the area, and maintain and replace infrastructure

Latest News.

The City has signed a contract with Apex Envirocare to undertake dredging of Lake Brearley. Dredging is scheduled to commence on 29th November 2021. The dredge being used is significantly more powerful than the dredge used on Lake Bungana. City officers will work with Apex Envirocare to monitor the volume of sediment removed and the area of Lake floor dredged.

City officers are continually monitoring emerging technology and innovative options to improve water quality and reduce midge at Maylands Lakes. Recently this has resulted in the City commencing a 12 month trial installation of ultrasonic units in Lake Brearley. The devices are solar powered and emit ultrasonic waves that cause gas pockets in algae cells to collapse resulting in the algae sinking and dying. There have been no reports of harm to humans, fish, birds and other fauna due to ultrasonics. The installation of the units is an additional action being taken by the City to complement the other initiatives that are already planned and being actioned.

The contract has been awarded for the supply and installation of the mixers. Preliminary site works for the provision of electrical supply to the mixers has been completed. The mixers are scheduled to be shipped from Queensland in September.

The raingarden at Tourer Court is now complete and will reduce some of the nutrients flowing into Lake Brearley.

A focused regime of midge and mosquito treatment was undertaken this past summer and feedback and monitoring indicated midge levels were lower. The same treatment approach has commenced early this year in response to midge levels.

Clean fill has been placed into the corner of Lake Brearley adjacent to Sopwith Elbow and Tourer Court which suffers from reduced circulation and tends to collect the floating algae. Final levels of this fill will be achieved once the water level reduces – we are targeting fill level to be approximately at the low water mark. This area will be planted with sedges once the final fill levels are achieved.

The floating wetlands have been removed from Lake Brearley as they were not thriving and they have been relocated to Lake Bungana, Brickworks Lake and the pond at Bardon Park.

Approximately 40 sedges have been installed along the hard wall in the south eastern corner of Lake Brearley. Installation of plants in these locations is challenging as there is limited fill and primarily limestone rock. City officers are trialing a new installation technique to determine its effectiveness. If it is found to be effective, there are a further 300 sedges to be planted once the water levels reduce.

In addition to the above actions, the City continues to monitor the latest advances in technology and water management approaches to ensure the most appropriate and impactful actions are taken at Maylands Lakes.

Three successful planting days have been held this planting season as follows:

  • 30 May 2021 at Lake Brearley in partnership with Friends of Maylands Lakes
  • 7th August 2021 at Brickworks Stream in conjunction with Friends of Maylands Lakes
  • 15th August 2021 at Brickworks Reserve in conjunction with Friends of Maylands Brickworks.

It was great to see so many community members participate in the planting days and a total of approximately 5000 plants were planted.


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Page last updated: 24 September 2021, 16:00