Kingborough Sewerage Upgrade Project

About the project

The Kingborough Sewerage Upgrade Project will benefit the Kingborough area, both now and for future generations, by consolidating and enhancing the Kingborough sewerage system.

There are three main components to the Project:

  • The Blackmans Bay Sewage Treatment Plant (STP) is being upgraded to centralise waste from local catchments and treat it to a higher standard before it is discharged into the Derwent Estuary.
  • Converting sewage treatment plants at Margate and Electrona to sewage pump stations that will transfer flows to the upgraded Blackmans Bay STP. Decommissioning and closing the Howden Sewage Treatment Plant.
  • Constructing a new pressurised sewer rising main, approximately 15 kilometres in length, that will transfer waste from the pump stations at Electrona and Margate to the upgraded Blackmans Bay STP.

Project benefits

The project represents an investment of $51 million by TasWater and will provide Kingborough with significant long-term benefits, such as improved public health and better quality effluent being discharged into the Derwent Estuary, as well as ensuring our assets deliver reliable service for a growing community over future generations.

The upgrade will:

  • Provide enhanced odour management at the existing Blackmans Bay STP.
  • Improve the quality of the effluent that is discharged into the Derwent Estuary.
  • Provide sufficient capacity for future growth and continuing development within the region.

About the project

The Kingborough Sewerage Upgrade Project will benefit the Kingborough area, both now and for future generations, by consolidating and enhancing the Kingborough sewerage system.

There are three main components to the Project:

  • The Blackmans Bay Sewage Treatment Plant (STP) is being upgraded to centralise waste from local catchments and treat it to a higher standard before it is discharged into the Derwent Estuary.
  • Converting sewage treatment plants at Margate and Electrona to sewage pump stations that will transfer flows to the upgraded Blackmans Bay STP. Decommissioning and closing the Howden Sewage Treatment Plant.
  • Constructing a new pressurised sewer rising main, approximately 15 kilometres in length, that will transfer waste from the pump stations at Electrona and Margate to the upgraded Blackmans Bay STP.

Project benefits

The project represents an investment of $51 million by TasWater and will provide Kingborough with significant long-term benefits, such as improved public health and better quality effluent being discharged into the Derwent Estuary, as well as ensuring our assets deliver reliable service for a growing community over future generations.

The upgrade will:

  • Provide enhanced odour management at the existing Blackmans Bay STP.
  • Improve the quality of the effluent that is discharged into the Derwent Estuary.
  • Provide sufficient capacity for future growth and continuing development within the region.
  • Media Release: Upgraded sewage treatment plant at Blackmans Bay up and running

    26 days ago
    TasWater’s $50 Million upgrade of the sewage treatment plant at Blackmans Bay has reached a major milestone with flows from the old plant now cut-over to the new facilities. The new Intermittent Decant Extended Aeration (IDEA) treatment process has the capacity to treat sewage from up to 40,000 households, nearly double what the old plant could manage.

    TasWater CEO Michael Brewster said this increased capacity will meet the needs of the growing Kingborough community until 2040.

    “We have also paid special attention to the management of odour at the new Blackman’s Bay facility. A bio-trickling filter odour control unit has...

    TasWater’s $50 Million upgrade of the sewage treatment plant at Blackmans Bay has reached a major milestone with flows from the old plant now cut-over to the new facilities. The new Intermittent Decant Extended Aeration (IDEA) treatment process has the capacity to treat sewage from up to 40,000 households, nearly double what the old plant could manage.

    TasWater CEO Michael Brewster said this increased capacity will meet the needs of the growing Kingborough community until 2040.

    “We have also paid special attention to the management of odour at the new Blackman’s Bay facility. A bio-trickling filter odour control unit has been incorporated to minimise the impact on the community – once we are fully commissioned our neighbours shouldn’t even know we are there.”

    Michael Brewster said the Blackmans Bay upgrade represents a very significant investment in Tasmania’s sewage infrastructure.

    “It demonstrates TasWater’s commitment to the economic and community development of Tasmania with the expanded capacity enabling both residential and business growth in the Kingston area.”

    “Importantly too it will improve the quality of treated effluent discharged from the plant to protect the environment of coastal communities and the River Derwent.”

    Construction of new pump stations at Electrona and Margate are also in the final stages. A new 15 kilometre pipeline will connect these pump stations to Blackmans Bay enabling the existing Electrona and Margate Sewage Treatment Plants to be closed and end the discharge of treated effluent into North West Bay.

    “It is extremely satisfying to now have Blackmans Bay on line and I recognise the massive amount of work carried out by our local contractors and joint venture partners Acciona/BMD (BAJV)”, Mr Brewster said.

    The upgrade was first brought to the drawing board by the Kingborough Council back in 2008 and Michael Brewster said TasWater is pleased it is bringing council’s original plan to fruition.

    “I appreciate the support Kingborough Council has provided throughout this project and thank the community and nearby residents for their patience during the construction period.”

    “I am confident the treatment plants upgrade will provide real benefits to the community and the environment,” Mr Brewster said.

    Work will continue at the site through until mid-year to complete the final commissioning process and decommission and repurpose or remove the old facilities.

  • Margate Sewage Treatment Plant, Dru Point – March 2019 Update

    about 1 month ago

    TasWater contractors continue works at the Margate Sewage Treatment Plant, Dru Point. This work is part of the Kingborough Sewerage Project and will see this treatment plant converted to a pump station that will transfer flows to the upgraded Blackmans Bay Sewage Treatment Plant.

    Scope of works

    The two lagoons inside the treatment plant compound are being progressively drained, initial sludge removal works are complete, with further sludge removal required, to be followed by rehabilitation of the area. Half of one of the drained lagoons will be repurposed to be used as a concrete lined emergency overflow storage lagoon.

    Installation...

    TasWater contractors continue works at the Margate Sewage Treatment Plant, Dru Point. This work is part of the Kingborough Sewerage Project and will see this treatment plant converted to a pump station that will transfer flows to the upgraded Blackmans Bay Sewage Treatment Plant.

    Scope of works

    The two lagoons inside the treatment plant compound are being progressively drained, initial sludge removal works are complete, with further sludge removal required, to be followed by rehabilitation of the area. Half of one of the drained lagoons will be repurposed to be used as a concrete lined emergency overflow storage lagoon.

    Installation of the two underground emergency storage tanks is now complete. These tanks will take flows as a result of extreme wet weather events or power outage. Any additional overflow will be captured in the repurposed lagoon.

    What is next?

    Earthworks will be undertaken incorporating:

    · Final removal of sludge;

    · Rehabilitation of the redundant lagoons and;

    · Formation of the emergency storage lagoon and associated concrete pour to line the lagoon.

    Work is on track to complete the conversion to a pump station by mid-April 2019 and will result in better environmental outcomes for North West Bay by ceasing the discharge of treated effluent into the bay from Margate.

    How will this affect me?

    Over the course of the next eight weeks residents and recreational users of Dru Point will notice fluctuations in temporary odour as we conduct these works. We apologise for the impact and thank you for your ongoing patience as these works continue.

    There will be trucks entering and leaving the treatment plant compound as the earthworks and final sludge removal works take place. To ensure safe access to the dog walking track, the entrance to the compound will be controlled during works.

    For your safety, please ensure you obey all signage and directions from traffic management in the area.

    There will be no interruption to your sewage service.

    Earthworks will continue within the compound until later in the year. We continue to work with Kingborough Council and the EPA as works progress.

    The Kingborough Sewerage Upgrade Project will provide reliable sewerage services for the coming decade, and improve environmental outcomes for both Kingborough and the Derwent Estuary.

    If you have any queries or would like further information on the Kingborough Sewerage Project, please contact Community Engagement Officer Cassandra Wells on 13 6992 or email enquiries@taswater.com.au


  • March 2019 update

    about 2 months ago

    Blackmans Bay Sewage Treatment Plant (BBSTP)

    The elements critical to enable the switch over to the new plant have now been tested and we are ready to progress to the next stage.

    Repairs to the concrete de-aeration chamber on the foreshore are also complete. This work was critical to enable the upgraded plant to function at its optimum performance capability.

    What’s next?

    Work to switch over and test the elements of the new plant is scheduled to begin mid-March 2019. This will be followed by the addition of sewage flows from Margate and Electrona into the new plant, currently scheduled...

    Blackmans Bay Sewage Treatment Plant (BBSTP)

    The elements critical to enable the switch over to the new plant have now been tested and we are ready to progress to the next stage.

    Repairs to the concrete de-aeration chamber on the foreshore are also complete. This work was critical to enable the upgraded plant to function at its optimum performance capability.

    What’s next?

    Work to switch over and test the elements of the new plant is scheduled to begin mid-March 2019. This will be followed by the addition of sewage flows from Margate and Electrona into the new plant, currently scheduled for April-May 2019.

    The switch over work includes:

    • small excavation works
    • cutting and demolition of some existing pipework
    • the installation of new pipework
    • directing the existing sewage flows to the new tanks

    Temporary increase in truck traffic from March 2019 to May 2019

    During the switch over and the introduction of flows from Margate and Electrona, we will need to dispose of additional sludge daily until works are complete. This means you may notice extra vacuum trucks during the day travelling to and from the BSSTP.

    24 hour works – Tuesday 12 March 2019 and Wednesday 13 March 2019 if required

    Part of the switch over work includes installation of new pipework, and works to re-direct the existing BBSTP flows to the new tanks. Once this pipework is started we must continue until complete. Therefore we may be required to continue works for up to 48 hours. During this period we need to use an excavator to lift equipment, trucks, mobile cranes, small hand tools and flood lighting.

    The location of works is confined to a small area of the plant, shown in the image here. We do not anticipate noise from the use of this equipment will impact residents however, if this is of concern please contact us on 13 6992.

    There will be no truck movements anticipated after 6pm during the 48 hour continuous working period.

    Fluctuations in temporary odour

    Residents near the treatment plant can expect to experience further temporary fluctuations in odour over the next two months. This is due to works related to the decommissioning of redundant equipment and also commissioning of the upgraded plant.

    Residents near the pump station on Lady Penrhyn Drive may also experience some odour as we continue to utilise the overflow lagoon as required throughout the commissioning process.

    Once the work is complete there will be a vast improvement in odour control management for the long term. We continue to work with Kingborough Council and the EPA as works progress.

    There will be no interruption to sewage services.

    The new plant is expected to be fully operational by late-2019 and will provide reliable sewerage services for the coming decades, and improved odour and environmental outcomes for both Kingborough and the Derwent Estuary.

    If you have any queries or would like further information on the Kingborough Sewerage Project, please contact Community Engagement Officer Cassandra Wells or Eleanor Laud on 13 6992 or email enquiries@taswater.com.au


  • Water Quality Information Session, Tuesday 5 March 5:30pm - 7:30pm

    about 2 months ago

    Officers from Kingborough Council, TasWater and the Derwent Estuary Program will present an update on the recreational water quality management strategy for Kingston Beach and Blackmans Bay.

    Community members are welcome to attend the presentation and following question time. Register here

    The event will also be live streamed on Council's Facebook page. Followers are welcome to submit questions during the live stream for the question time.

    Tuesday 5 March 2019
    5:30pm - 7:30pm Civic Centre, 15 Channel Hiighway Kingston.


    Officers from Kingborough Council, TasWater and the Derwent Estuary Program will present an update on the recreational water quality management strategy for Kingston Beach and Blackmans Bay.

    Community members are welcome to attend the presentation and following question time. Register here

    The event will also be live streamed on Council's Facebook page. Followers are welcome to submit questions during the live stream for the question time.

    Tuesday 5 March 2019
    5:30pm - 7:30pm Civic Centre, 15 Channel Hiighway Kingston.


  • Outfall maintenance update

    about 2 months ago
    Upgraded de aeration chamber 2019

    We have completed the concrete pour associated with these works and are now conducting the final elements of testing the outfall components. This testing includes temporarily increasing the flow of treated effluent through the outfall pipe.

    People in the area and recreational water users may notice a disturbance to the surface of the water in this area (approx. 550 meters from the foreshore below the BBSTP).

    This may appear similar to a school of fish or small bubbles, conversely there may be no visible affect from these tests at all.

    This work is scheduled...

    We have completed the concrete pour associated with these works and are now conducting the final elements of testing the outfall components. This testing includes temporarily increasing the flow of treated effluent through the outfall pipe.

    People in the area and recreational water users may notice a disturbance to the surface of the water in this area (approx. 550 meters from the foreshore below the BBSTP).

    This may appear similar to a school of fish or small bubbles, conversely there may be no visible affect from these tests at all.

    This work is scheduled to occur Monday 4 March 2019 and is expected to be complete by the end of the day.

    We recommend any fishers and boaties remain clear of the area when the testing is occurring. We will have a boat in the area on Monday to advise people of what is happening and recommend they clear the immediate area during the test as a precaution.

    There will be no interruption to your sewerage service.

  • Planned shut down at the Blackmans Bay Sewage Treatment Plant – temporary odour may result

    2 months ago

    As progress continues at the plant we are now working to assess and conduct any required maintenance to the outfall. The outfall transfers treated waste water (effluent) from the treatment plant to disperse it past the foreshore below the treatment plant out into the river.

    While divers perform the works we need to amend operations at the plant to alter the flows through the plant as required.

    This work may result in temporary odour
    On the day of works there may be a temporary increase in odour from the treatment plant.

    Residents near the pump station on Lady Penrhyn Drive...

    As progress continues at the plant we are now working to assess and conduct any required maintenance to the outfall. The outfall transfers treated waste water (effluent) from the treatment plant to disperse it past the foreshore below the treatment plant out into the river.

    While divers perform the works we need to amend operations at the plant to alter the flows through the plant as required.

    This work may result in temporary odour
    On the day of works there may be a temporary increase in odour from the treatment plant.

    Residents near the pump station on Lady Penrhyn Drive may also experience some odour as, depending on the actual flows on the day, we may need to utilise the overflow lagoon.

    Similarly, there may also be some odour generated from the pump station on Suncoast Drive.

    When
    We have scheduled works to occur on one day during the week beginning Monday 18 February 2019. Works will begin late morning and be should be complete late afternoon on the same day.

    It is difficult to schedule a specific day as we require a dry weather day coupled with conditions conducive to diving. However, work is currently scheduled to occur Wednesday 20 February 2019 weather permitting.

    There will be no interruption to your sewerage service.

  • Works on the foreshore below the BBSTP

    3 months ago
    De aeration chamber

    We are currently working on the concrete de-aeration chamber, located on the foreshore below the plant. This chamber allows fully treated waste water from the treatment plant to settle, with any air dispersed prior to release through the outfall.

    There will be a small increase in construction traffic and noise during this work. You may notice a large crane in the BBSTP compound, being used to add a layer of concrete to the existing chamber and to lift equipment in and out. There is scaffolding at the top of the cliff and temporary fencing to prevent public access to the...

    We are currently working on the concrete de-aeration chamber, located on the foreshore below the plant. This chamber allows fully treated waste water from the treatment plant to settle, with any air dispersed prior to release through the outfall.

    There will be a small increase in construction traffic and noise during this work. You may notice a large crane in the BBSTP compound, being used to add a layer of concrete to the existing chamber and to lift equipment in and out. There is scaffolding at the top of the cliff and temporary fencing to prevent public access to the area. Please obey any signage and do not enter the construction zone for your own safety.

    The concrete pour is now confirmed to take place on Friday 22 February 2019

  • Margate Sewage Treatment Plant - Dru Point

    4 months ago
    Margate sps excavation concreting   reduced size

    Underground storage tanks - ready to install

    We have now completed the excavation and preparation works required to allow the installation of the two 110 kilolitre fibreglass underground emergency storage tanks.

    These tanks will take any flows as a result of extreme wet weather events or power outage.

    Weather permitting, we expect to install the storage tanks by the end of December.

    Pictured above - concrete pour to create a layer of concrete blinding in readiness for
    placement of additional concrete wells and the two overflow storage tanks.

    Underground storage tanks - ready to install

    We have now completed the excavation and preparation works required to allow the installation of the two 110 kilolitre fibreglass underground emergency storage tanks.

    These tanks will take any flows as a result of extreme wet weather events or power outage.

    Weather permitting, we expect to install the storage tanks by the end of December.

    Pictured above - concrete pour to create a layer of concrete blinding in readiness for
    placement of additional concrete wells and the two overflow storage tanks.
  • Update on progress of construction at the BBSTP

    6 months ago
    Img 0135

    Repurposing of the existing sewage treatment plant is underway. Construction of the Intermittently Decanted Extended Aeration IDEA tanks is now complete as we progress towards commissioning of the plant, which is scheduled to begin from November 2018.

    There are many elements to commissioning. Effectively this will put the new plant into operation and test the components to ensure they operate as intended.

    The plant is expected to be fully commissioned by late-2019 and will provide reliable sewerage services for the coming decade, and improve environmental outcomes for both Kingborough and the Derwent Estuary.


    Repurposing of the existing sewage treatment plant is underway. Construction of the Intermittently Decanted Extended Aeration IDEA tanks is now complete as we progress towards commissioning of the plant, which is scheduled to begin from November 2018.

    There are many elements to commissioning. Effectively this will put the new plant into operation and test the components to ensure they operate as intended.

    The plant is expected to be fully commissioned by late-2019 and will provide reliable sewerage services for the coming decade, and improve environmental outcomes for both Kingborough and the Derwent Estuary.


  • Margate Sewage Treatment Plant - Dru Point WARNING

    6 months ago
    Warning sign 001

    Construction work at the Margate Sewage Treatment Plant has resulted in a reduction in the quality of treated waste water being discharged into this area.

    Swimming and activities that involve direct contact with the water are not recommended.

    We are working with Kingborough Council and the Environmental Protection Authority.


    Construction work at the Margate Sewage Treatment Plant has resulted in a reduction in the quality of treated waste water being discharged into this area.

    Swimming and activities that involve direct contact with the water are not recommended.

    We are working with Kingborough Council and the Environmental Protection Authority.