The kanamaluka/Tamar estuary is a special landscape that connects our community. We appreciate its importance to Launceston and the wider community, which is why we are making investments today to ensure its health for future generations.
As part of the Tamar Estuary River Health Action Plan (TERHAP), we will be delivering new sewerage infrastructure for the city to improve the health of kanamaluka/Tamar estuary and the environment that surrounds it.This transformative pipeline project, which is one of the largest infrastructure projects of its type in the southern hemisphere, will increase our capacity to transfer sewage and stormwater, significantly reducing the frequency and volume of overflow events.
Construction of the new pipeline involved installing large pipes up to 45 metres under the estuary riverbed at two river-crossing between the Margaret Street Sewage Pump Station and our Ti Tree bend Sewage Treatment Plant. The river crossings were connected via pipeline trenched on the Western Foreshore at Trevallyn.
The Tamar Estuary River Health Action Plan (TERHAP or the Plan) is an initiative of the Tamar Estuary Management Taskforce (TEMT) and the Launceston City Deal, to improve the health of kanamaluka/Tamar Estuary.
TERHAP is jointly funded by the Australian and Tasmanian governments, the City of Launceston and TasWater.
Timeline item 1 - complete
October 2023
Finalised establishing our project works sites and began major construction works of the pipeline.
Timeline item 2 - complete
November - December 2023
We completed important drilling activities and prepared for the pulling of the new pipes between Invermay and Valley Street, Trevallyn.
Timeline item 3 - complete
December 2023
We successfully pulled through a 650-metre-long section of the 900mm diameter poly pipe at a depth of 40 metres below the riverbed. This is the first of two river crossings and has connected our Ti Tree Bend site to our construction site at Valley Street.
Timeline item 4 - complete
January 2024
We commenced our next phase of drilling works at our Kings Park site.
Timeline item 5 - complete
February 2024
We mostly completed the noisy hammering activities at our Kings Park and western foreshore sites.
Timeline item 6 - complete
April 2024
We installed a 200-metre Horizontal Directional Drilling (HDD) shot that spans softer ground at the northern end of the Silt Ponds area in Trevallyn.
We also continued work to install over 600 metres of trenched pipeline along the western foreshore.
Timeline item 7 - complete
June 2024
Completed the pipe pull through between Kings Park and the western foreshore.
Timeline item 8 - active
August / September 2024
Complete connections of the pipeline sections and the Margaret Street Pump Station.
Timeline item 9 - incomplete
Late 2024
Major construction works on the pipeline are planned to be completed late 2024. We have commenced work on a major Storage Tank at Ti -Tree Bend, these works will continue through 2025.
The majority of construction works will take place from 7am to 5pm Monday to Sunday. There may be times when we need to work outside of these hours, but we’ll let you know in advance if this is required.
Kings Park
Now that our major construction machinery, including the Horizontal Directional Drilling rig, has been removed from our Kings Park site, the footpath along Paterson Street has been reopened for public use.We’re currently working with the Council on the project’s final landscape designs for this area and will share these in a future update.
Western foreshore and Valley Street
In Trevallyn, we have finished reinstating the ground, completed fencing, and placed new asphalt on the public pathways in the western foreshore area. The paths are now fully reopened for public use.
We thank the community for their understanding while we delivered this important project.
25 November 2024
At our Kings Park construction site, works are underway with connection works for the New Sewer Pipeline. The sheet piles we installed to provide stability for the levee and buried ends of the new pipeline have now been removed.
From late November we began pouring the final lift of sand and cement, as well as trench excavations and building concrete works.
The new pipeline is nearly ready for connection to the New Margaret Street Pump Station and will be completed by the end of 2024.
During the first half of 2025 there will be ongoing works at our Kings Park site. While these works continue, the double stacked shipping containers will remain on site to provide important noise mitigation.
In Trevallyn, we have finished reinstating the ground, completed fencing and placed new asphalt on the public pathways in the western foreshore area. The pathways are now fully reopened for public use.
Our construction works in the Trevallyn area are now complete.
The project is expected to be completed late 2024.
As part of the Tamar Estuary River Health Action Plan (TERHAP), we will be delivering new sewerage infrastructure to improve the health of kanamaluka/Tamar estuary.
We are constructing a new 10 megalitre storage tank at the our Ti Tree Bend Sewage Treatment Plant.
Since creation, the palawa have lived here in lutruwita - Tasmania. Over 2,000 generations of Aboriginal families have cared for this Country, looking after its lands, seas, skies and waterways.
In the spirit of respect and gratitude, TasWater acknowledges the Tasmanian Aboriginal community as the traditional and ongoing custodians. We pay our respects to them, their culture and to elders past and present. We also acknowledge any Aboriginal and Torres Strait Islander people who are here with us today.
TasWater commits to working collaboratively and respectfully with the Tasmanian Aboriginal community to protect and sustain the precious resources on this ancient land for future generations.
Have questions or want to learn more about a project, contact us below:
| Phone | 13 6992 |
|---|---|
| Website | www.taswater.com.au |
| In writing | GPO Box 1393, Hobart TAS 7001 |
