Our River. Our Future

Revitalising kanamaluka/Tamar estuary

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.

What's this project all about?

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.

Major construction works are underway in areas near our Margaret Street Pump Station, along the western foreshore (Trevallyn area) and at our Ti Tree Bend Sewage Treatment Plant at Invermay.

Construction sites

Click here to download a PDF file of our project map.

Our construction works involve installing large pipes which will be laid up to 45 metres under the estuary riverbed. The construction works is primarily drilling beneath the riverbed of the estuary and land-based trenching.

If you happen to be walking along the Richie's Mill Walk in Launceston of enjoying Tailrace Park at Trevallyn, keep an eye for our recently installed some project interpretive signs.

TERHAP Interpretive Signage

Project update

During the last week of June, we reached an important milestone on this project.

The three-kilometre pipeline connecting the Margaret Street Pump Station with the Ti -Tree Bend Sewage Treatment Plant was completed with the ‘pull through’ of 1.1 kilometres of the new pipeline under kanamaluka/Tamar estuary.

This last kilometre of one-metre diameter pipeline was pulled through the bored tunnel we have recently finished installing at a depth of around 45 metres beneath the riverbed.

During late May we hosted a site visit for Science and Technology students from Launceston College. The site visit was an opportunity for the students to get a sense of the practical science and engineering involved in this major project, as well introduce students to potential career pathway opportunities.

At our western foreshore site in Trevallyn, we have now completed earth works related to laying the pipeline in the trench.

The next phase of our works involves activities to connect the new pipeline sections together and to our Margaret Street Pump Station.

Over the coming months we will gradually clear the West Tamar site of major construction activity and begin work to reinstate area.

For more information about our construction progress view our latest construction video here.


TERHAP - May construction udpate

TERHAP - June construction udpate

What you will notice during our works

Hours of work

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.

Managing pedestrian access to community spaces

Kings Park

We’ve designed this project to minimise our footprint on the local environment.

While we've had to close access to the footpath on Paterson Street (Kings Park), the community are still able to use the recreational pathway on the river side.

We’re currently working with Council on the project’s final landscape designs for this area and will share these in a future update.

Changes to public access Western foreshore and Valley Street

Major construction is planned to be completed by late 2024.

We thank the community for their understanding while we deliver this important project.

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.

Tamar Estuary River Health Action Plan Projects


Have your say...

We welcome your feedback about the TERHAP New Sewer Pipeline Project