Keep your water filtration system performing at its best with quality replacement cartridges, UV lamps, filtration media and accessories from WTS.
Whether you're maintaining an under-bench drinking water filter, servicing a whole-house filtration system or replacing components in a commercial water treatment installation, WTS can help you find the right parts for your system.
Based in Cambridge, Waikato, we supply replacement water filtration products throughout New Zealand and offer professional onsite filter servicing across the Waikato region.
Replacement Water Filter Cartridges
Restore Filtration Performance. Maintain Water Quality.
Regular cartridge replacement is an essential part of maintaining an effective water filtration system. Over time, filter cartridges collect sediment, particles and other contaminants, while the treatment capacity of certain filtration media gradually reduces.
Replacing cartridges at the appropriate intervals helps maintain water flow, protect downstream equipment and ensure your filtration system continues delivering its intended benefits.
WTS supplies replacement cartridges for a wide range of domestic, rural and commercial water filtration applications.
EXPLORE CARTRIDGE OPTIONS
Polypleat – Pleated Sediment Filter Cartridges
High-capacity sediment filtration with excellent dirt-holding performance. Pleated sediment cartridges are designed to capture suspended particles while providing a large filtration surface area. Their pleated construction makes them particularly useful in applications where water contains varying sediment loads and good flow performance is important. Key benefits: Captures sediment, dirt, rust and suspended particles. Large surface area supports effective sediment retention. Helps protect downstream filters, pumps and appliances. Available in different filtration ratings and cartridge sizes. Selected washable cartridges can be cleaned and reused where the manufacturer permits. Ideal for: Rainwater systems, rural water supplies, whole-house filtration and pre-filtration applications.
Polyspun – Depth Sediment Filter Cartridges
Reliable fine-particle filtration for cleaner water. Polyspun cartridges use a depth-filtration structure to trap suspended particles throughout the cartridge material. They are an excellent choice for reducing finer sediment and improving water clarity, particularly when used after a coarser sediment filtration stage. Key benefits: Reduces fine sediment, silt and suspended particles. Helps improve water clarity. Protects downstream carbon filters and UV treatment systems. Available in a range of micron ratings and cartridge dimensions. Suitable for domestic and commercial filtration systems. Ideal for: Whole-house filtration, under-bench filters, rainwater treatment and multistage filtration systems.
Activated Carbon – Taste & Odour Filter Cartridges
Enjoy fresher-tasting water with effective carbon filtration. Activated carbon cartridges are widely used to improve the taste, smell and overall drinking experience of household water. Depending on the carbon media and cartridge specifications, these filters can reduce chlorine, unwanted tastes, odours and selected organic compounds. Key benefits: Improves water taste and odour. Reduces chlorine where the cartridge is rated for chlorine reduction. Enhances drinking water quality and palatability. Available in carbon block and granular activated carbon options. Suitable for under-bench and whole-house systems. Ideal for: Drinking water filtration, kitchen filters, municipal water supplies and selected rainwater applications.
GAC/KDF – Advanced Filtration Media Options
Enhanced water treatment through complementary filtration technologies. Selected cartridges combine granular activated carbon (GAC) with KDF media to provide additional treatment capabilities. These cartridges can be a useful alternative to standard carbon cartridges where the water characteristics and treatment objectives justify their use. Depending on product specifications, GAC/KDF media can support chlorine reduction and treatment of selected dissolved contaminants. Key benefits: Combines activated carbon adsorption with KDF treatment media. Offers additional treatment capabilities for suitable water conditions. Can improve taste and odour. Provides a specialised alternative to conventional carbon filtration. Ideal for: Selected drinking water and household filtration applications requiring additional treatment capability.
Reverse Osmosis (RO) Membrane Cartridges
Advanced membrane filtration for exceptionally pure, great-tasting drinking water. Reverse Osmosis (RO) membranes provide a high level of water purification, using a semi-permeable membrane to reduce dissolved salts, heavy metals and a wide range of other impurities that conventional sediment and carbon filters cannot effectively remove. As the central treatment stage in an RO system, the membrane helps deliver consistently high-quality drinking water for households seeking more comprehensive filtration. Key benefits: Reduces dissolved salts, minerals and a broad range of contaminants. Helps reduce selected heavy metals, including lead, where the membrane is appropriately rated. Produces highly purified water for drinking and cooking. Works alongside sediment and carbon pre-filters for comprehensive water treatment. Replacement membranes help maintain purification performance and system efficiency. Ideal for: Under-bench reverse osmosis systems, drinking water purification, households with elevated dissolved solids and applications requiring advanced water treatment.
Remineralising Filter Cartridges
Restore beneficial minerals and enhance the taste of purified drinking water. Remineralising cartridges are designed to improve the mineral balance and taste of water following reverse osmosis filtration. By introducing selected minerals, commonly including calcium and magnesium depending on the cartridge formulation, these filters help create a more balanced, pleasant drinking experience. Installed as a final treatment stage in compatible RO systems, remineralising cartridges offer an excellent finishing touch to highly purified water. Key benefits: Adds selected minerals back into RO-treated water. Helps improve the taste and mouthfeel of purified drinking water. Can raise the pH of low-mineral water, depending on cartridge specifications. Provides a finishing stage for compatible reverse osmosis systems. Simple replacement helps maintain consistent mineral enhancement. Ideal for: Under-bench reverse osmosis systems, post-RO water conditioning, drinking water taste enhancement and households wanting mineral-enriched purified water.
UV Water Filtration Replacement Lamps & Parts
Maintain Reliable UV Water Disinfection
UV water treatment systems are an important component of many rainwater, bore water and rural drinking water supplies.
To maintain effective UV disinfection, lamps must be replaced according to the manufacturer's recommended operating life, even if they continue to illuminate.
WTS can help source compatible UV replacement components for domestic and commercial water treatment systems.
Common replacement components include:
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UV replacement lamps.
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Quartz sleeves.
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O-rings and seals.
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UV system accessories and compatible service parts.
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Selected sensors and specialist components.
Why Replace Your UV Lamp?
UV lamp output gradually reduces with use. A lamp may still produce visible light even when its germicidal UV output is no longer sufficient for the system's specified treatment performance.
Many conventional UV lamps have a recommended replacement interval of approximately 12 months, although the correct interval depends on the equipment and manufacturer.
Quartz sleeves should also be inspected and cleaned or replaced as required, as deposits can reduce UV transmission.
Whole-House & Commercial Filtration Replacement Media
Specialist Filtration Components for Larger Water Treatment Systems
Not every filtration system uses a standard replaceable cartridge.
Larger domestic, rural, agricultural and commercial water treatment systems may use specialist media and components designed to address particular water quality challenges.
WTS can assist with sourcing and selecting replacement components for a range of systems, including:
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Multimedia sediment filtration.
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Activated carbon media vessels.
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Water softening and ion-exchange resin systems.
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pH correction and neutralising media.
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Screen and disc filtration.
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Specialist commercial water treatment equipment.
The correct replacement media depends on the filtration equipment, water chemistry, operating conditions and intended treatment outcome.
Need specialist replacement media? Contact WTS for advice on compatible products and servicing requirements.
Not Sure Which Cartridge or Replacement Part You Need?
Water filter cartridges are not necessarily interchangeable, even when they look similar.
The correct replacement depends on your existing filter housing, cartridge dimensions, filtration rating, water quality and required flow.
Let WTS Help Identify Your Filter
Unsure what you need? Send us a photo of your existing cartridge, filter housing or UV system label, along with any visible model numbers.
Our team can help identify suitable replacement options and advise on maintenance requirements.
Water Filter Servicing & Maintenance – Waikato
Professional Filtration Servicing from WTS
Keeping your filtration system maintained is about more than simply replacing a cartridge.
Regular servicing helps maintain water flow, identify potential problems and ensure individual filtration stages continue operating as intended.
WTS provides onsite water filtration servicing throughout Cambridge, Waipa and the wider Waikato region.
Our servicing capabilities include:
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Sediment and carbon cartridge replacement.
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UV lamp replacement and quartz sleeve maintenance.
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Filter housing inspection and seal replacement.
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Pressure and flow checks.
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Specialist filtration media maintenance.
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Water sampling and testing where required.
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Assessment of existing filtration performance and recommendations for improvement.
We service a range of domestic, rural and commercial water filtration systems, from under-bench filters to multistage whole-house treatment installations.
Whether your system is due for routine maintenance, experiencing reduced flow or requires replacement parts, WTS can help.
Frequently asked questions
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