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Orford and Triabunna Water and Sewerage Strategy 2015-2050

Lower Prosser Dam

Updated March 2018

Without significant rainfall and inflow into TasWater's dams, it may soon be necessary to place Orford and/or Triabunna on Stage 1 Water Restrictions. More information will be provided as TasWater continues to monitor dam levels and rainfall in the area.

That Orford and Triabunna are vulnerable to water restrictions is well-known to the local community. This is why TasWater’s Orford and Triabunna Water and Sewerage Strategy 2015-2050 provides a long-term plan for water security, by upgrading and rationalising the two towns’ water supply systems, improving their reliability, performance and safety.

There are a number of projects within the strategy, some of which are already complete and others which will continue to roll out progressively in coming months, years and decades.

Proposed expansion of the Upper Prosser Dam

Improved bulk water storage is needed to provide better water security for both towns. The four dams currently servicing the area – namely the Upper and Lower Prosser dams, and the Brady and Maclaines dams – are all either undersized, at capacity or nearing the end of their design life. Rather than repairing and maintaining four separate dams, it is more effective to consolidate the area’s bulk water supply into one dam.

TasWater is considering a proposal to expand the Upper Prosser Dam to provide more water storage. Our investigations so far have confirmed the location is viable, based on studies into threatened species and local heritage. No approvals or funding have yet been provided for this project and we will consult further with the community if we proceed.

Investigations of the Lower Prosser Dam

In April-May 2018, locals may see TasWater staff and contractors at the dam for approximately 3-4 days, investigating the condition of the Lower Prosser Dam. This work will include an examination of the dam’s hydraulic floodgates.

Orford to Triabunna Trunk Water Main

TasWater’s long-term strategy calls for a new treated water main along the Tasman Highway. This will improve the transfer of water between the two towns, which will eventually be supplied from a single new source.

In partnership with Glamorgan Spring Bay Council, this pipeline will be built in 2019, and installed in the same trench as pipelines for local property development and industry. Each partner is funding its own part of these works, but the collaboration will reduce overall costs and disruption to the area.

More information on these roadworks will be provided once the working schedule is completed.

Completed projects

  • Orford and Triabunna Water Treatment Plants upgrades
  • Decommissioning of Holkham Sewage Pumping Station, Orford
  • Orford Sewerage Outfall Project

Register below for updates

We will keep the community informed as we progress. If you would like to register for updates from this website, please complete the form below.

Updated March 2018

Without significant rainfall and inflow into TasWater's dams, it may soon be necessary to place Orford and/or Triabunna on Stage 1 Water Restrictions. More information will be provided as TasWater continues to monitor dam levels and rainfall in the area.

That Orford and Triabunna are vulnerable to water restrictions is well-known to the local community. This is why TasWater’s Orford and Triabunna Water and Sewerage Strategy 2015-2050 provides a long-term plan for water security, by upgrading and rationalising the two towns’ water supply systems, improving their reliability, performance and safety.

There are a number of projects within the strategy, some of which are already complete and others which will continue to roll out progressively in coming months, years and decades.

Proposed expansion of the Upper Prosser Dam

Improved bulk water storage is needed to provide better water security for both towns. The four dams currently servicing the area – namely the Upper and Lower Prosser dams, and the Brady and Maclaines dams – are all either undersized, at capacity or nearing the end of their design life. Rather than repairing and maintaining four separate dams, it is more effective to consolidate the area’s bulk water supply into one dam.

TasWater is considering a proposal to expand the Upper Prosser Dam to provide more water storage. Our investigations so far have confirmed the location is viable, based on studies into threatened species and local heritage. No approvals or funding have yet been provided for this project and we will consult further with the community if we proceed.

Investigations of the Lower Prosser Dam

In April-May 2018, locals may see TasWater staff and contractors at the dam for approximately 3-4 days, investigating the condition of the Lower Prosser Dam. This work will include an examination of the dam’s hydraulic floodgates.

Orford to Triabunna Trunk Water Main

TasWater’s long-term strategy calls for a new treated water main along the Tasman Highway. This will improve the transfer of water between the two towns, which will eventually be supplied from a single new source.

In partnership with Glamorgan Spring Bay Council, this pipeline will be built in 2019, and installed in the same trench as pipelines for local property development and industry. Each partner is funding its own part of these works, but the collaboration will reduce overall costs and disruption to the area.

More information on these roadworks will be provided once the working schedule is completed.

Completed projects

  • Orford and Triabunna Water Treatment Plants upgrades
  • Decommissioning of Holkham Sewage Pumping Station, Orford
  • Orford Sewerage Outfall Project

Register below for updates

We will keep the community informed as we progress. If you would like to register for updates from this website, please complete the form below.

  • Register here for updates

    Thank you for your interest in the Orford and Triabunna Water and Sewerage Strategy. Please register here and as this website is updated we will send you notifications.

    Thank you for your interest in the Orford and Triabunna Water and Sewerage Strategy. Please register here and as this website is updated we will send you notifications.

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