Water Filtration Systems
Discover a comprehensive selection of water filtration systems to suit Australian homes, businesses and specialty applications. Our product range includes under-sink, whole house, caravan, sediment, carbon, deionising, UV treatment and specialty water filtersplus all the replacement cartridges, filter housings and maintenance kits you need to keep your system performing. Shop confidently with fast same-day dispatch on stocked items and enjoy free shipping for most orders over $450 (excluding GST). Whether you need a reliable solution for clean drinking water in your home, office or caravan, Direct Wholesale offers trusted brands and expert support to match your requirements. For best installation results, we recommend engaging a licensed professional.
Choose the Right Water Filter for Your Application
Not every filtration system is designed for the same purpose. Browse our specialist categories to find the solution that best suits your installation.
- Replacement Cartridges
- Whole House Water Filters – Filter water at the point it enters your home, helping protect taps, showers and connected appliances.
- Undersink Water Filters – Compact systems that provide filtered drinking water directly from your kitchen sink.
- Reverse Osmosis Systems – Multi-stage systems designed for a higher level of drinking water purification.
- UV Water Treatment Systems – Use ultraviolet treatment to help control bacteria and microorganisms in suitable water supplies.
- Caravan Water Filters – Compact filtration products designed for caravans, campers and mobile applications.
- Spare Parts – Maintain your existing filtration system without replacing the complete unit.
Whether you're fitting out a new home, improving drinking water in an office or replacing a worn cartridge, our dedicated subcategories make it easier to narrow the range by application.
Genuine Puretec Replacement Cartridges & Water Filters
As one of Australia's most recognised water filtration brands, Puretec offers filtration solutions for residential, commercial, rainwater and rural applications.
We stock a wide range of genuine Puretec products, including:
- Puremix replacement cartridges
- QT Quick Twist cartridges
- Hybrid UV maintenance kits
- Sediment filter cartridges
- Carbon block cartridges
- Inline filters
- Filter housings, accessories and maintenance parts
Choosing a genuine replacement cartridge helps maintain filtration performance and makes it easier to confirm compatibility with your existing system.
Choosing the Correct Replacement Cartridge
If you're replacing an existing water filter cartridge, the easiest way to reduce the risk of ordering the wrong product is to match the model number, cartridge family and dimensions shown on your current filter.
Shop Puretec Cartridges by Family
| Cartridge Family | Description | Common Applications |
|---|---|---|
| Z Series | The Puretec Z Series features advanced multi-stage filtration designed to deliver cleaner, better-tasting drinking water. These cartridges help reduce chlorine, sediment, Giardia, Cryptosporidium cysts and trihalomethanes (THMs), making them ideal for premium point-of-use filtration systems. | Undersink drinking water systems and kitchen filtration. |
| PL Series | Manufactured from durable, washable polyester media, the PL Series is designed for reliable sediment filtration. These reusable cartridges provide an economical solution for removing dirt, rust and suspended particles across a wide range of residential and commercial water filtration systems. | General sediment filtration, pre-filtration and commercial applications. |
| PX Series | The PX Series delivers high-performance sediment filtration using premium depth filter technology. Designed to capture dirt, rust, sand, silt, algae and other suspended particles, these cartridges are suitable for both water treatment and selected industrial liquid filtration applications. | Whole house filtration, rainwater systems and commercial water treatment. |
| WD Series | The WD Series uses precision wound construction to provide consistent depth filtration and dependable sediment removal. These cartridges effectively reduce sand, silt, rust and scale, making them a cost-effective choice for bore water, rainwater and other high-sediment water supplies. | Bore water, rainwater harvesting, whole house and industrial filtration. |
| CB Series | Constructed from bonded activated carbon, the CB Series is designed to improve water quality by reducing chlorine, unpleasant tastes, odours and sediment. Selected models also target contaminants such as lead, cysts, heavy metals and sulphur while minimising the release of carbon fines. | Drinking water systems, undersink filtration and whole house carbon filtration. |
| MP Series | The MaxiPlus™ (MP Series) filter housings are engineered for high-flow and large-capacity filtration systems. Available in 10" and 20" reinforced polypropylene housings, they accommodate larger cartridges to increase capacity and support demanding filtration applications. | High-flow residential, commercial and industrial filtration systems. |
| CC Series | The CC Series provides an economical solution for everyday water filtration. Designed for light-duty applications, these cartridges help reduce sediment, chlorine, unpleasant tastes and odours, making them an excellent choice for general-purpose filtration. | Residential drinking water systems and light-duty filtration. |
| IL Series | The IL Series consists of compact inline replacement cartridges designed for installations where space is limited. They provide reliable filtration while helping improve water taste and quality in compatible appliances and dedicated drinking water systems. | Refrigerators, coffee machines, ice makers and inline drinking water systems. |
Depending on the filtration media selected, water filter cartridges can help reduce sediment, chlorine, unpleasant tastes and odours, rust, dirt and other impurities. Different systems may use sediment, carbon or specialist cartridges individually or as part of a multi-stage setup.
Understanding Micron Ratings
Micron ratings indicate the approximate size of particles a filter is designed to capture. A lower micron rating provides finer filtration, but the correct option depends on the system design, application and water quality.
| Micron Rating | Filtration Level | Typical Use |
|---|---|---|
| 0.1 Micron | Extremely fine filtration for selected specialist cartridges and systems. | Applications requiring very fine filtration where the system is designed for a 0.1 micron cartridge. |
| 1 Micron | Fine filtration capable of capturing smaller sediment and suspended particles. | Commonly used in drinking water and fine sediment filtration applications. |
| 5 Micron | General-purpose filtration that balances sediment removal with good water flow. | Whole house systems, drinking water filtration and general sediment reduction. |
| 10 Micron | Coarser filtration designed to capture larger particles before finer filtration stages. | Pre-filtration, higher sediment loads and applications where maintaining flow is important. |
Choosing a micron rating: A lower micron rating provides finer filtration, but finer is not always better for every system. Match the cartridge size, model and micron rating recommended for your filtration setup unless you are intentionally changing the filtration configuration.
Why Buy Water Filtration Products from Direct Wholesale?
Whether you're a homeowner, plumber or trade customer, Direct Wholesale makes it easy to compare and purchase water filtration products online.
- Extensive range of genuine water filtration products
- Competitive everyday pricing
- Live stock availability
- Fast Australia-wide shipping
- Same-day dispatch on stocked items ordered before our daily cut-off
- 60-day returns
- Full Australian supplier warranty
- Trade pricing available on selected ranges
Need help selecting the correct cartridge? Our experienced team can help identify compatible products before you order. For plumbed systems, including undersink, whole house, reverse osmosis and UV treatment products, installation by a suitably licensed tradesperson is recommended.
Shop Water Filtration by Category
Browse our specialist water filtration categories:
- Whole House Water Filtration Systems
- Undersink Water Filters
- Reverse Osmosis Systems
- UV Water Treatment Systems
- Caravan Water Filters
- Replacement Water Filter Cartridges
- Water Filtration Spare Parts
- Water Filtration Maintenance Kits
Whether you're upgrading your home's drinking water, maintaining an existing Puretec system or sourcing filtration products for a commercial application, you'll find quality products backed by knowledgeable support and fast delivery from Direct Wholesale.
Frequently Asked Questions
What’s the difference between a complete water filtration system and a replacement cartridge on this page?
A complete water filtration system is the main unit installed at the point of use or entry, such as an undersink, whole house, reverse osmosis or UV treatment system. A replacement cartridge is the consumable filter element that suits an existing setup and is replaced as part of maintenance. This category includes both, so buyers can source a new system or the matching cartridge and maintenance parts in one place.
How do I choose between whole house, undersink and reverse osmosis water filtration systems?
Choose based on where you want filtration and what outcome you need. Whole house systems treat water entering the property, undersink systems are a compact option for drinking water at a single tap, and reverse osmosis is typically chosen when a higher level of purification is required. This category also includes UV treatment, caravan and specialist options for more specific applications.
What do 0.1 micron, 1 micron, 5 micron and 10 micron filters mean?
Micron rating refers to how fine the filter media is. Lower micron options such as 0.1 micron are used when very fine filtration is needed, while 1, 5 and 10 micron cartridges are common across sediment, carbon and general filtration stages depending on the system. The right rating depends on your existing unit, water quality goals and whether you are replacing like for like.
How do I know if a Puretec cartridge or maintenance kit will fit my existing system?
The safest approach is to match the cartridge or maintenance kit to the model family already installed, such as Puremix, Ultra Z, QT or Hybrid ranges shown on the page. Product names include identifiers like Z1-R, X7-R, Z6-R and QT12R, which help confirm compatibility before ordering. If you are replacing an existing filter, matching the current model code is the best way to avoid a wrong order.
Are these water filtration products suitable for homes only, or can they also be used in caravans, offices and commercial sites?
They are not limited to home use. This range includes options for residential drinking water, office use, caravans and broader commercial or industrial applications, with categories for caravan filtration, whole house treatment, UV treatment and replacement parts. The right product depends on the installation type and the water treatment method already in use.