Capability Statement

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:

Through our local office, we've been working with Dunedin City Council to successfully deliver 'three waters' (wastewater, stormwater, and drinking water) upgrades.

As a member of the Council's works panel, we are one of a small number of organisations upgrading the city’s water and wastewater treatment plants through to 2031.

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.

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 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.

We were half of the Connectus joint venture, responsible for tunnelling works and relocating, protecting or decommissioning around 250 underground services in the hearth of Auckland CBD. Procured under an Early Contractor Involvement (ECI) model, the highly complex contract was an early works package for the NZ$4.4 billion City Rail Link (CRL) project.

Our works comprised two separable portions: SP1: 350 m of cut and cover tunnels under Albert Street between Customs Street and Wyndham Street, as well as re-instating the streetscape on completion. SP2: Pipejacking 516 m of new stormwater main along the eastern side of Albert Street, between Swanson Street and Wellesley Street, and strengthening a 40m length of the Orakei Main Sewer beneath Victoria Street

In partnership with Sydney Water and others, we formed the Water Delivery Alliance and designed and delivered the new pipeline and pump station linking Sydney's new desalination plant at Kurnell to the city's water network at Erskineville.

While the desalination plant was delivered via a conventional lump-sum contract, Sydney Water selected an alliance for the pipeline due to the technical, community and environmental risks involved.