WE CREATE VALUE through our experience, innovation, creative design and simple solutions.
WE ARE 100% EMPLOYEE OWNED which means we take pride in building high performing, reliable, quality plants.
Our mission is to
GUARD the environment
GUARD our communities
GUARD our clients and retain CUSTOMERS FOR LIFE
Guardian Water
Water Treatment Specialists in Sydney & NSW
Water treatment solutions for tunnelling, dewatering, and infrastructure projects across Australia.
Guardian Water provides specialised construction water treatment solutions for civil, infrastructure, and industrial projects across Sydney, New South Wales, and Australia. We design, supply, and operate treatment systems that ensure site water is managed safely, efficiently, and in full compliance with environmental regulations.
Our services support a wide range of applications including tunnelling water treatment, construction dewatering, PFAS treatment, and contaminated groundwater management. From initial water quality assessment through to system design, installation, and operation, we deliver practical solutions tailored to site conditions and project requirements.
With a responsive, hands-on team, Guardian Water enables contractors to meet strict compliance standards while maintaining programme certainty. We focus on fast mobilisation, reliable system performance, and clear communication throughout every stage of the project.
What We Do?
Our Project Legacy
Our in-house project experience includes:
Construction excavation and piling
Road and Rail
Tunneling water treatment
Sludge dewatering
Recycling wash plants
Landfil leachate
Contaminated groundwater
PFAS (Airport, Defence, Fire Services)
Accomodation camps
Potable water
Wastewater / sewage
pH control and disinfection
Demineralisation and remineralisation
Ultra-pure industrial water
Power station service water
Truck and helicopter wash
Our team is experienced and capable in:
Operation and maintenance
Sampling and testing (NATA)
Plant tuning, optimisation and troubleshooting
Jar testing and chemical / media selection
Remote monitoring
Media changeouts
Chemical supply and pumpouts
decontamination and demobilisation services
Our Core Engineering Competencies
Securing Your Project Through
Absolute Reliability
Streamlined Simplicity
Optimised Capacity
And we deliver on that PROMISE
Solutions We Provide
At Guardian Water, we deliver reliable and efficient water treatment, wastewater treatment, and dewatering solutions for construction, infrastructure, industrial, and municipal projects across Sydney&NSW.
We understand that every site presents unique water challenges. That’s why we design tailored, fit-for-purpose treatment systems that ensure environmental compliance, minimise risk, and keep projects moving.
Our expertise includes construction dewatering and groundwater treatment, helping clients manage excavation water, tunnelling works, and high groundwater conditions. We provide effective sediment control, filtration, and advanced treatment systems to meet strict discharge standards.
We also specialise in modular and containerised water treatment systems, allowing for rapid deployment and flexibility on-site. These solutions are ideal for remote locations, temporary works, and projects requiring scalable treatment capacity.
Our team delivers wastewater and potable water treatment solutions, including leachate treatment, industrial wastewater treatment, and reverse osmosis (RO) systems, designed for reliability, efficiency, and long-term performance.
From concept to completion, Guardian Water provides a complete service:
Process design and engineering
Pilot testing and system optimisation
Equipment supply and system integration
Installation and commissioning
Operations, maintenance, and ongoing support
With a strong focus on innovation, sustainability, and practical delivery, we work closely with clients, contractors, and engineers to provide solutions that are not only technically sound but also buildable, cost-effective, and dependable in real-world conditions.
Lets Chat.
Contact us for an obligation free discussion.
We’d love to help you find the solution that saves you time, money, risk and headaches.