Guidera O’Connor delivers a diverse portfolio of water infrastructure projects across Australia. Our customers include water authorities, local government, mining and resources companies, private asset owners, head contractors, and engineering organisations.
Our expert teams specialise in the innovative renewal of existing assets through truly collaborative, outcome-driven partnerships.
We deliver:
Recycled Water Treatment
Guidera delivers advanced treatment solutions tailored to customer needs, integrating process, mechanical, electrical, and automation systems to produce reliable, fit-for-purpose recycled water while maximising resource recovery.
Desalination
Plants
Guidera delivers complex desalination facilities and upgrades, combining specialist treatment technologies, process optimisation, and operational expertise to improve water security in challenging environments.
Water & Wastewater Treatment
Guidera delivers both new facilities and complex brownfield upgrades, with no interruption to supply or performance. Our process improvements enhance treatment capacity and performance, improve reliability, and support customers in meeting evolving regulatory and sustainability objectives.
Aquifer Storage & Recovery
Guidera delivers aquifer storage and recovery facilities that integrate treatment, pumping, monitoring, and control systems to improve water security, resilience, and long-term sustainability.
Pumping
Stations
Guidera designs and constructs new pumping stations and delivers complex brownfield upgrades while maintaining uninterrupted supply and performance. We deliver reliable mechanical, electrical, civil, and automation solutions from small regional installations to major metropolitan facilities.
Chemical Dosing
Systems
Guidera delivers complete dosing facilities, including storage, transfer, metering, containment, and control systems, helping clients improve treatment performance, maintain compliance, enhance safety, and optimise operational efficiency.
Our services
Guidera provides end-to-end capability across the full water infrastructure project lifecycle, from early concept development through to design, construction, commissioning, handover, and operations support.
Operational optimisation & support
Practical input into maintainability, operator involvement during commissioning, knowledge transfer, training materials, and handover documentation that supports long-term asset performance.
ECI, concept development, & feasibility
Early planning, constructability input, technical advice, scope definition, cost planning, risk identification, staging advice, and practical delivery strategies.
Commissioning, testing, & handover
Our in-house commissioning team works closely with design and construction personnel to ensure an operable asset from the earliest project phases. Structured commissioning, performance testing, and operator training ensures assets perform as intended, achieve operational targets, minimise start-up risks, and support a smooth transition to operations.
Optioneering & cost estimating
We evaluate technical options through the lens of whole-of-life performance, operational requirements, risk, and affordability, impartially recommending solutions that deliver best value, improve asset outcomes, support funding decisions, and provide greater cost certainty throughout project development and delivery.
Construction delivery
We safely deliver complex infrastructure in live operational, regional, remote, and brownfield environments. Our reliable project execution, strong safety performance, consistent quality, and practical solutions achieve program commitments while maintaining service continuity and stakeholder confidence.
Engineering design & design management
We provide design and design management across process, mechanical, electrical, instrumentation, controls, civil, structural, environmental, HVAC, architectural, security, lighting, and fire systems. Our coordinated approach reduces design interface, minimises rework, improves project certainty, and delivers solutions that are practical to construct, operate, and maintain throughout the asset lifecycle.
Procurement & supply chain
We establish, upskill, and develop resilient, efficient supply chains that secure critical resources, manage delivery risks, and optimise market engagement. Our approach improves cost control while providing greater program certainty, reliable equipment supply, and local, social, and economic benefits to the project region that support long-term outcomes.
Digital engineering & drafting
We use digital engineering, BIM, 3D modelling, and visualisation tools to improve collaboration, coordination, and decision-making. Customers benefit from reduced design clashes, improved stakeholder understanding, greater delivery certainty, and enhanced project outcomes through better-informed planning, construction, and asset management decisions.
Our projects
Our project portfolio showcases the depth of our experience, technical expertise, and commitment to delivering exceptional outcomes for our customers and the communities we work in.
Sydney Science Park Water Recycling Hub
For Sydney Water
Integrated Water Recycling Hub to service new smart city precinct, delivering recycled water for dual reticulation and irrigation, and diverting excess sewage to the St Marys WRP.
Onslow Desalination
Plant
For Water Corporation
New 1.5ML/day desalination plant drawing from Beadon Bay to supply climate-resilient drinking water to the township of Onslow in Western Australia’s Pilbara region.
Melton Wastewater Treatment Plant Upgrade
For Greater Western Water
Upgrades to inlet works, sludge thickening and dewatering systems, wet weather bypass, aeration and RAS systems, and electrical, maintaining operation throughout.
Alkimos WWTP
Upgrade
For Water Corporation
Major brownfield capacity upgrade to 26 ML/d including structural, mechanical, electrical, and instrumentation works while maintaining operations.
Kangaroo Island Desalination Plant
For SA Water
2ML/d desalination plant supplying potable water to 700+ local homes and businesses. Includes new marine pipeline, raw sea water pump station, and reverse osmosis plant.
Bunbury Water Recovery Scheme
For Aqwest
A sustainable water initiative preserving precious groundwater by providing fit-for-purpose recycled water to irrigate public open space.
Murray Bridge Pump Station 3 HV Upgrade
For SA Water
Upgrade of high-voltage electrical switchboards and associated infrastructure to ensure safe continued operation of this 500ML/d raw water pump station.
Perseverance Dam Pump Station Upgrade
For Toowoomba Regional Council
Replacement of aging below-water-level pump station with off-shore and on-shore works replacing pumps, line shafts, and HV motors within complex site conditions.
Waterproofing Eastern Adelaide
For Eastern Region Alliance
Aquifer Storage and Recovery Scheme to harvest, treat, store and distribute recycled stormwater. Treated water is injected into a fractured-rock aquifer and extracted for irrigation of parks and reserves.
Happy Valley UV Disinfection System
For SA Water
The southern hemisphere’s largest manufactured drinking water ultraviolet (UV) disinfection system servicing drinking water for nearly half a million South Australians.
SA Regional Desalination Program
For SA Water
Three new bore water desalination plants for regional townships of Marla, Maree, and Oodnadatta, including reverse osmosis, remineralisation and chlorination, and raw and potable water storage.
Newman Fluorosilicic Acid Dosing Plant
For BHP
New Fluorosilicic Acid (FSA) dosing plant to meet water fluoridation requirements for the town of Newman in Western Australia’s Pilbara region.