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Critical Hobart sewer line at Mac Point to be replaced

Work is progressing on a critical infrastructure project for Hobart with the replacement and diversion of the main sewer line for Hobart’s CBD.

Capable of carrying almost 1000 litres of waste per second, Macquarie Point Development Corporation is managing the replacement and diversion of the 116-year-old pipe through the development site.

Tenders are being called for to construct the pipeline, with significant engineering work already undertaken by the Corporation.

“The replacement and diversion of the sewer line is necessary to pave the way for permanent development to occur at Mac Point, with the current sewer line intersecting with the footprint of the proposed Antarctic and Science Precinct,” Mac Point Chief Executive, Mary Massina said.

“This work is also crucial for the decommissioning and relocation of the Mac Point Sewage Treatment Plant (STP) to Selfs Point, which is key to seeing development progress at Mac Point.”

The Hobart main sewer is a critical piece of TasWater infrastructure, with a catchment area including Hobart’s CBD and surrounding suburbs.

The sewer line was first constructed in 1906, is largely built from concrete and has a 1050mm diameter.

The new sewer line is expected to be constructed with an increased flow capacity than what is currently in place.

The existing sewer line will be replaced commencing from Evans Street and through Mac Point to the STP.

TasWater General Manager, Project Delivery, Tony Willmott said the STP relocation project is a complex engineering challenge.

“The long-term plan is to re-route the existing and future sewage from the Mac Point catchment to an upgraded sewage treatment plant at Selfs Point.”

“We are working closely with the Macquarie Point Development Corporation, the State Government and the Environmental Protection Authority to progress this project.”

The sewer line work is expected to take 7 months and impact on the public will be minimal.

Tender applications close on 4 May 2022.

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