Water Pretreatment and Filtration Services
Start with your water to protect your systems, reduce costs and improve performance.
The impact of poor water quality extends beyond reduced performance, leading to costly and preventable operational problems. Without proper water pretreatment and filtration, systems often require increased chemical use to compensate for poor incoming water. Corrosion and scale formation tend to accelerate, compromising system integrity and lowering thermal efficiency. As deposits accumulate, heat transfer is reduced, and energy consumption increases. Over time, blockages and mechanical stress can lead to unplanned downtime and costly repairs. These conditions also shorten the lifespan of critical equipment, leading to higher maintenance costs and early asset replacement.

At Tandex, we tailor our water pretreatment and filtration programs specifically for boiler systems to protect your equipment, reduce chemical demand, and support energy-efficient operation. Each program begins with a detailed analysis of your feedwater and boiler configuration, allowing us to develop a practical, site-specific approach to managing scale, fouling, and contaminant load before they affect performance. Our water pretreatment and filtration services address common boiler water issues at the source. This reduces system strain, improves boiler reliability and extends equipment life, while supporting a more stable and cost-effective chemical treatment program. Our mechanical pretreatment solutions for boilers include:
Water Softening
Removes calcium and magnesium to prevent scale on heat exchange surfaces.
Filtration
Eliminates suspended solids, pipe debris, and rust that can clog valves or reduce flow.
Reverse Osmosis
Water Softening
Removes calcium and magnesium to prevent scale on heat exchange surfaces.
Filtration
Eliminates suspended solids, pipe debris, and rust that can clog valves or reduce flow.
Reverse Osmosis
Water pretreatment and filtration are just as essential for cooling towers and closed-loop systems as they are for boilers. While these systems may seem low-risk, even treated water can gradually accumulate suspended solids, corrosion by-products, and microbiological growth. Unchecked buildup can result in restricted flow, under-deposit corrosion, increased chemical demand and early component failure, all of which reduce efficiency and elevate long-term operating costs.
Our side-stream filtration systems operate continuously, treating between 5-15% of the circulating water without disrupting system operation. By removing fine particulates and biological contaminants, they improve reliability, extend asset life, and reduce the need for excessive chemical dosing in both cooling towers and closed-loop applications
With over 50 years of industry experience, Tandex is a trusted provider of practical, reliable water pretreatment and filtration services throughout Australia. We work closely with facilities managers, mechanical contractors, and engineers to identify issues early and implement preventative strategies before problems escalate. Our team delivers site-specific system assessments, installs and services reverse osmosis units, softeners, and filtration systems, and provides ongoing water quality monitoring with detailed reporting. Every solution we offer is designed to integrate seamlessly with your broader water treatment program.

With over 50 years of industry experience, Tandex is a trusted provider of practical, reliable water pretreatment and filtration services throughout Australia. We work closely with facilities managers, mechanical contractors, and engineers to identify issues early and implement preventative strategies before problems escalate. Our team delivers site-specific system assessments, installs and services reverse osmosis units, softeners, and filtration systems, and provides ongoing water quality monitoring with detailed reporting. Every solution we offer is designed to integrate seamlessly with your broader water treatment program.
The best time to address water quality is before it causes costly damage. Whether you’re commissioning a new boiler, managing a cooling tower, or maintaining a closed-loop system, our tailored water pretreatment and filtration programs help protect your assets, enhance system performance, and reduce operating costs over time.
The best time to address water quality is before it causes costly damage. Whether you’re commissioning a new boiler, managing a cooling tower, or maintaining a closed-loop system, our tailored water pretreatment and filtration programs help protect your assets, enhance system performance, and reduce operating costs over time.







