Information Pack

Drawing on our industry-leading trenchless construction experience, we delivered the Warkworth to Snells Transfer Pipeline for Watercare, continuing our strong relationship with them.

The project was part of Watercare's North-East Wastewater Servicing Scheme, which conveyed wastewater from Warkworth to Snells Beach. The scheme will cater for future growth and enable Watercare to decommission the existing Warkworth Wastewater Treatment Plant, which discharges into the Mahurangi River.

We designed and constructed the final section of Auckland's biggest water pipeline project, re-routing the pipeline to minimise impacts, and completing New Zealand's longest ever pipe-jack.

The 32 km long Hūnua 4 project connects Watercare’s reservoirs in Manukau to central city water storage, improving the capacity and the resilience of the city's water network.

We used the optimum mix of tunnelling and trenched construction techniques to deliver the Barber Grove to Seaview Wastewater Treatment Plant Pipe Duplication Project for Wellington Water, causing the least impact possible.

The project involved the installation of a new 1.2 km long, 1 m diameter pressurised wastewater pipeline. It services 90% of the residents in Hutt Valley, improving water quality and catering to the region’s growth.

Proposing a trenchless solution to minimise disruption, Watercare Services awarded us the Snells Algies wastewater pipe and outfall construction project. It resulted in new world record - a 2021 metre long Direct Pipe® drive delivered using a micro tunnel boring machine.

The project was the first phase of a three-phased scheme to improve water quality in the Mahurangi Harbour and cater for population growth in the Warkworth and Mahurangi East communities north of Auckland.

In one of the largest trenchless project to be undertaken for Auckland Council, we installed nearly all of this 1.1 km long, 2.5 m diameter stormwater pipe using trenchless technology. The new pipeline connects the McLennan Park stormwater ponds with the Pahurehure outlet and is designed to meet the growing population of South Auckland.

We used a closed-face slurry Micro Tunnel Boring Machine (MTBM), except for a short section constructed using open-cut methods. We also constructed five deep manholes and inlet and outlet structures.

Using state-of-the-art Direct Pipe® tunnelling technology for the first time in New Zealand helped us mitigate the significant risks we faced on Watercare's Army Bay Ocean Outfall project.

They engaged us to design and construct a new wastewater outfall, upgrade an existing pump station, and build a new ultraviolet disinfection facility to increase the outfall capacity of their Army Bay Wastewater Treatment Plant at Shakespear Regional Park.

On behalf of Unitywater, we're delivering critical new water and wastewater infrastructure to support growth on Queensland's Sunshine Coast. The new pipelines, pump stations, and storage reservoirs will support the new Aura and Harmony communities in the Caloundra region.

For the Aura development (which will grow to 50,000 residents by 2050), we're delivering a new wastewater network that includes over 12 km of 900 mm diameter pipeline and one pump station. We're also delivering a new water supply network for this community, that includes over 12 km of 800 mm diameter pipeline connecting the Ewen Maddock Dam to a new 12 ML water reservoir.

In joint venture with Diona (the Water North JV) we're one of three major framework partners delivering SA Water’s multi-billion dollar capital delivery program. The 'Frameworks' model fosters collaboration and innovation in the planning and delivery of water projects across metro and regional South Australia.

During the first four years (2020 - 24) our team delivered approximately 150 projects, including the design and construction of:

We're delivering the Fitzroy to Gladstone Pipeline (FGP) project for the Gladstone Area Water Board (GAWB) and the Queensland Government. The project, which will have the capacity to transport 30 gigalitres per annum, will enable long-term water security for urban and industrial customers in the region.

The FGP, which comprises an approximately 117 km long, 1 m diameter pipeline, a water treatment plant, reservoirs, and pumping stations, will also support the emerging hydrogen industry in the Gladstone region of Queensland. We have teamed up with BMD Constructions in a joint venture (the MBJV) to deliver the Project.

We were a member of the Adelaide Aqua consortia responsible for designing, building, and commissioning the Adelaide Desalination Plant, the state's largest ever infrastructure project. The reverse osmosis plant is one of the most efficient in the world and can produce 100 GL of fresh water each year.

The project encompassed all construction disciplines including bulk earthworks, civil structures, marine, tunnelling, mechanical, electrical, and building works. Some 10,000 people were employed during construction.