Capability Statement

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.

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.

We’re working with Sydney Water to deliver the Thompsons Creek Stage 1 - South project, part of a program of new wastewater infrastructure to support western Sydney’s rapid growth.

In a joint venture with Gamuda Australia, we have been awarded Sydney Water’s Ryde to Pymble pipeline upgrade project.

The project involves the design and construction of approximately 11 km of DN900 watermain from Ryde Pump Station to Wahroonga Reservoir, reinstating a critical watermain first built in 1936.

As the principal contractor within the Southern Regional Water Pipeline Alliance, we designed and delivered a new 200-megalitre-per-day water grid on a fast-track program to support the rapidly growing population of South East Queensland.

The project was delivered during the worst drought on record, with Brisbane's water storages at less than 15 percent capacity. This 'need for speed' necessitated concurrent progress in land access, design, approvals, and procurement.

In a joint venture with our building company, Built Environs, we designed, constructed, and commissioned the water pipeline and associated pumping infrastructure that connects the Adelaide Desalination Plant, (also delivered by us in consortia), to Adelaide’s main reservoir at Happy Valley.

We were awarded the project following an extensive early contractor involvement (ECI) process, including a rigorous assessment of our proposed design, construction methodology, and costs.

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.

In alliance, we delivered the Western Corridor Recycled Water Pipeline (WCRWP), the backbone of the largest advanced recycled water project in the southern hemisphere and third largest in the world.

The project was an integral component of the Queensland Government’s A$9 billion South East Queensland Water Grid, the largest urban drought response in Australia.

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.

Limiting our construction footprint was a key part of our delivery approach for the St Marys Bay Area Water Quality Improvement Project in Auckland.

Now complete, this Auckland Council Healthy Waters project reduces the frequency of releases of stormwater overflow into the Waitematā Harbour by 95%. It provides storage in the form of a 1.8 m diameter, 2 km long underground pipeline, and a new 450 m long ocean outfall. Stored water is pumped back into the sewer network when there is capacity. Discharged water is released far away from places where people swim.

We rehabilitated the Ambuklao and Binga hydro electric powerplants for SN Aboitiz Power-Benguet (SNAP), combining expert project knowledge with proven construction techniques to complete the projects safely and efficiently.

Ambuklao was first commissioned in 1956, while the downstream Binga plant was commissioned in 1960. Both were shutdown in 1999 due to damage from an earlier earthquake.

In an alliance with Brisbane Water we upgraded the Lake Manchester Dam, 25 km west of Brisbane, to meet current Australian National Committee on Large Dams (ANCOLD) guidelines. The inherent instability of the dam structure required some imaginative approaches.

The safety issues needing rectification included inadequate spillway capacity; the potential instability of the dam when water levels reached the crest of the dam; the possibility of the washing out of the downstream toe of the dam during major flood events; and potential erosion problems in the ‘plunge pool’ of the spillway.

We proposed and implemented an alternative construction approach for the Meander Dam project, with our roller compacted concrete (RCC) solution reducing environmental risk and delivering cost, productivity and program benefits for the Tasmanian Government.

Roller-compacted concrete (RCC) is a special blend of concrete that has essentially the same ingredients as conventional concrete but in different ratios. The drier mix has many time and cost benefits over conventional mass concrete, including higher rates of concrete placement, lower material costs, and lower costs associated with post-cooling and formwork

Statkraft Norfund Power Investment Group and Aboitiz Power (SNAP) awarded us the Maris South Canal Hydro Electric Power (HEPP) project - an 8.5 MW low head hydroelectric power station in North Luzon, Philippines.

The award built on our 10 year working relationship with SNAP, who are the owners of the Ambuklao Hydro Power Plant in the Philippines, which we rehabilitated for them.

The project scope included stabilising the banks of the Waikato River alongside the control gates that manage water flow to the Waikato Hydropower System.

Powerful water flows erode the banks alongside the gates, and Mercury’s asset surveillance regime had identified the need for intervention to prevent further erosion.

We developed some innovative design and construction solutions to upgrade 1950s-built Cosseys Dam, after Watercare detected significant deterioration. Located in the environmentally sensitive Hunua Ranges, the earth fill structure is Auckland's third largest dam and holds 14% of the city’s water storage.

The earthfill dam stands 49 m high and 170 m long at the crest. It has a 230 m long diversion tunnel linking to a valve tower and scour systems.

We improved the safety and performance of one of the largest dams in the Southern Hemisphere for the NSW state government. They selected us based on the quality of our technical solution, our approach to protecting the sensitive river environment, and our strategies for minimising impacts on the nearby tourist park.

We secured the project after an extensive pre-qualification and competative early tender involvement (ETI) process.

We are constructing the Kidston Pumped Storage Hydro Project in Far North Queensland - an innovative project that involves the world-first conversion of a disused gold mine into a pumped storage hydroelectric power generation facility.

This first-of-its-kind natural battery storage facility has the potential to generate up to 250 MW of rapid response (less than 30 seconds), flexible power to Australia’s National Electricity Market.

We rehabilitated the Ambuklao and Binga hydro electric powerplants for SN Aboitiz Power-Benguet (SNAP), combining expert project knowledge with proven construction techniques to complete the projects safely and efficiently.

Ambuklao was first commissioned in 1956, while the downstream Binga plant was commissioned in 1960. Both were shutdown in 1999 due to damage from an earlier earthquake.

Awarded the design and construct contract for the Bogong Power Development Project by AGL, our engineers set about developing smart design and construction strategies that ultimately reduced the project cost by A$30 million.

Consisting of a network of tunnels and shafts and the construction of a new underground hydro electric power station, the Bogong Power Development Project is the largest hydro power project constructed in Australia in 25 years.

Following successful completion of an Early Works contract for the APLNG project, MCJV, a joint venture between ourselves and Consolidated Contracting Company Australia Pty Ltd, was awarded an EPC contract for delivery of 360 km of the main export pipeline, a 57 km lateral pipeline, and associated facilties.

The overall APLNG project included the development of substantial coal seam gas resources in the Surat and Bowen Basins. The key elements of the project were the transmission pipeline, subsea crossing (Narrows Crossing) and a multi-train LNG facility on Curtis Island, near Gladstone.

We constructed a 145 TJ per day gas compression and water treatment hub, with associated infrastructure and water gathering lines, at the coal seam gas fields north east of Roma in Queensland. The infrastructure enabled collection and processing of gas for delivery via an export pipeline to an LNG processing plant on Curtis Island, off Gladstone.

The large and complex project required a multi-disciplinary approach, with a focus on facilities for gas compression, power generation and water treatment, in addition to pipeline construction.

In joint venture with Consolidated Contracting Company (the MCJV), we designed and delivered the Narrows Crossing project, one of the most diverse and challenging pipeline projects ever completed in Australia.

Our scope involved the connection of the QCLNG and APLNG 42” export pipelines from their termination points across the Narrows Channel to the LNG plant on Curtis Island. We also delivered the QCLNG Delivery Station.

New Zealand's 11th outfall and our ninth Tunnel Boring Machine (TBM) ‘marine recovery’ were completed in late 2025, on time, on budget, with zero Lost Time Injuries (LTIs) and no stakeholder complaints - a 'hole in one' by all the project's key metrics.

Watercare's Clarks Beach Wastewater Treatment Plant, which is located within the Clarks Beach Golf Course in Auckland’s southwest, required a new 240 metre-long outfall.