Types of Water Filtration Systems: A Practical Guide for Perth Homeowners
Water Filtration System Vary in Quality, Capacity and Filtration Purity.
If you’ve lived in Perth for more than a week, you’ve likely noticed the white, crusty scale building up on your shower screens and the distinct smell of chlorine-heavy water coming from your kitchen tap. Between the heavy mineral content of our hard water and the chlorine used to treat it, Perth’s mains supply is notoriously tough on both your home, your expensive appliances and your health.
This guide breaks down everything you need to know about choosing a whole house filtration system for your property. We’ll explore how modern water filtration works, why Western Australian conditions require a specific approach, and how to find a system that actually survives the WA sun.
What Is a Whole House Filtration System?
A whole house filtration system is a Point of Entry (POE) solution installed directly where your main water line enters your property. Unlike a small jug or a single tap filter, this system treats every single drop of water before it reaches a faucet, showerhead, or appliance.
Think of it as a gatekeeper for your home. By filtering water at the source, you protect your skin and hair from harsh chemicals, prevent sediment from clogging your dishwasher, and extend the life of your hot water system.
The Main Types of Water Filtration Systems
When evaluating different types of filtration systems, it is vital to acknowledge that no single filter is a “silver bullet” for every contaminant. Each technology has a specific purpose and significant limitations. Choosing the right setup depends on whether you want to fix a single tap or protect your entire property.
Sediment Filters
Sediment filters are mechanical barriers designed to catch physical debris. They are the frontline defenders that remove sand, rust, silt, and pipe scale before these particles can damage your appliances or clog finer filters. While a sediment water filter is essential, it does not remove dissolved chemicals, chlorine, or heavy metals.
The effectiveness of these filters is dictated by their micron rating. A lower rating indicates a tighter weave that catches smaller particles. These are the workhorses of any plumbing setup, but they should never be used as a standalone solution if you are concerned about water taste or chemical safety.
1 Micron Polyspun Sediment Water Filter Cartridge | 20” x 4.5” Whole House Replacement Filter
The 1 Micron Polyspun Sediment Water Filter Cartridge (20” x 4.5”) is designed for high-performance whole-house water filtration systems, including Big Blue–style housings. This filter is the first line of defence in your system, removing fine sediment before it reaches carbon filters, appliances, plumbing fixtures, and tapware.
Manufactured from high-density polypropylene, this depth-filtration cartridge effectively captures dirt, sand, silt, rust, scale, and other suspended particles down to 1 micron, improving water clarity while extending the service life of downstream filters.
Its graded, grooved polyspun structure increases surface area and dirt-holding capacity, allowing for consistent flow rates and reduced pressure drop across the filter. This makes it ideal for residential homes, offices, and light commercial applications where water quality and system protection matter.
Key Features & Benefits
1 Micron Filtration – Removes fine sediment, dust, rust, and particulate matter for noticeably clearer water
Polyspun Depth Filter Design – High dirt-holding capacity for longer service intervals
Grooved Surface Construction – Maximises surface area and improves flow efficiency
Universal 20” x 4.5” Size – Compatible with most Big Blue and standard whole-house filter housings
Food-Grade, BPA-Free Polypropylene – Safe for potable water applications
Protects Downstream Filters & Appliances – Reduces clogging and premature filter failure
This 20” x 4.5” 1 micron sediment filter is an essential component for maintaining performance, water clarity, and system longevity in any whole-house filtration setup.
1 Micron Antibacterial Polyspun Sediment Water Filter Cartridge | 20” x 4.5” Whole House Replacement
The 1 Micron Antibacterial Polyspun Sediment Water Filter Cartridge (20” x 4.5”) is a premium first-stage filter designed for whole-house filtration systems, including Big Blue–style housings. In addition to fine sediment removal, this cartridge incorporates nano silver antibacterial technology to help inhibit microbial growth on the filter media.
Manufactured from high-density polypropylene, this depth filtration cartridge removes sediment, rust, sand, silt, algae, and suspended particulate matter down to 1 micron, improving water clarity while protecting downstream carbon, PFAS, and specialty media filters.
The integrated nano silver treatment is designed to reduce bacterial buildup on the filter surface during service life, making it ideal for installations where stagnant water, warm climates, or extended service intervals may be a concern.
Key Features & Benefits
Nano Silver Antibacterial Technology – Helps inhibit microbial growth on the filter media
1 Micron Filtration – Captures fine sediment, dust, rust, and particulate contaminants
Polyspun Depth Filter Construction – High dirt-holding capacity for extended service life
Grooved Surface Design – Maximises surface area and maintains consistent flow rates
Universal 20” x 4.5” Size – Compatible with most Big Blue and standard whole-house housings
Food-Grade, BPA-Free Polypropylene – Suitable for potable water applications
Protects Downstream Filters & Plumbing – Reduces clogging and premature filter failure
Typical Applications
Whole-house water filtration systems
Pre-filtration for carbon, PFAS, and specialty media filters
Residential, office, and light commercial installations
Replacement Interval
Replace approximately every 6–12 months, depending on incoming water quality and usage. Systems exposed to higher sediment loads may require more frequent replacement.
⚠️ Important Notice
This antibacterial sediment filter is designed to inhibit microbial growth on the filter media only. It does not disinfect water or remove bacteria, viruses, or microorganisms from the water supply. Do not use with microbiologically unsafe water without appropriate disinfection before or after the filtration system.
Carbon Block Filters
Carbon block filters utilize the power of adsorption to improve water quality. These are the primary tools for removing chlorine, chloramine, and volatile organic compounds (VOCs) that cause unpleasant tastes and odors. It is important to note that a carbon filter will not remove sediment or heavy metals effectively on its own.
For Perth’s specific water supply, which is heavily treated with chloramine, a compressed coconut shell carbon block is significantly more effective than cheaper granular activated carbon. The density of a block filter ensures longer contact time between the water and the carbon, leading to better chemical removal.Puretec FilterWall F4
The Puretec FilterWall F4 operates at a flow rate of 30 litres per minute and filters down to 1 micron at the final stage carbon block. Chlorine removal is rated at under 98 percent with no capability for PFAS removal. Filters require replacement every 6 months and use 10 inch by 4.5 inch cartridges available through the manufacturer or authorised distributors. While no subscription is required for this system, the smaller filter size necessitates more frequent replacement cycles.
The distinction between universal and proprietary filters impacts the total cost of ownership over the life of a system. A proprietary supplier can raise prices, change products or require a subscription to maintain a warranty. A universal size gives the homeowner freedom to choose their own supplier and ensures they are not locked into one provider.
1 Micron Coconut Carbon Block Water Filter Cartridge | 20” x 4.5” Whole House Replacement
Improve the taste, smell, and overall quality of your household water with this 1 micron coconut carbon block water filter cartridge, designed for use in standard 20” x 4.5” whole-house filtration systems.
Manufactured using 100% premium coconut shell activated carbon, this high-density carbon block effectively reduces chlorine, chloramine by-products, unpleasant tastes and odours, and volatile organic compounds (VOCs) while maintaining strong flow rates and low pressure drop.
By targeting chemical contaminants that sediment filters cannot remove, this cartridge delivers noticeably cleaner, fresher-tasting water throughout the home and helps protect plumbing fixtures, appliances, and downstream filtration media.
Key Features & Benefits
1 Micron Carbon Block Filtration – Reduces chlorine, taste, odour, VOCs, and fine particulates
100% Coconut Shell Activated Carbon – High adsorption capacity for effective chemical reduction
NSF/ANSI 42 Compliant Media – Designed for chlorine taste and odour reduction
Universal 20” x 4.5” Size – Compatible with most Big Blue and standard whole-house housings
Food-Grade, BPA-Free Construction – Safe for potable water applications
Protects Plumbing & Appliances – Helps reduce chemical exposure and buildup across the home
Typical Applications
Whole-house water filtration systems
Homes affected by chlorine taste or chemical odours
Pre-filtration before PFAS, specialty carbon, or UV systems
Replacement Interval
Replace approximately every 6–12 months, depending on incoming water quality and household usage. Higher chlorine levels or heavier usage may require more frequent replacement.
This 20” x 4.5” coconut carbon block filter cartridge is an essential component of any properly designed whole-house filtration system, delivering improved water quality, better taste, and long-term system performance.
0.5 Micron Coconut Carbon Block Water Filter Cartridge | 20” x 4.5” Universal Replacement for Whole House Filter
Improve taste, clarity, and overall water quality with this 0.5 Micron Coconut Carbon Block Water Filter Cartridge. Designed for effective chemical reduction, this high-performance carbon block removes chlorine, unpleasant tastes and odours, VOCs, and fine particulates commonly found in town water supplies.
Manufactured using 100% premium coconut shell activated carbon, the dense carbon block structure maximises contact time for reliable contaminant reduction while maintaining consistent flow throughout the home.
Key Features
0.5 Micron Filtration – Reduces fine sediment, chlorine, and volatile organic compounds (VOCs).
Coconut Shell Activated Carbon – Naturally improves taste and odour through high adsorption efficiency.
NSF/ANSI 42 Performance – Designed for chlorine taste and odour reduction.
High-Density Carbon Block – Maximises contaminant contact time for improved performance.
Universal Fit – Standard 20” x 4.5” size suits most whole house filter housings.
Food-Grade Construction – BPA-free materials for safe household water use.
Long Service Life – Typical replacement interval up to 12 months, depending on water quality and usage.
Protects Downstream Components – Helps reduce chemical exposure to plumbing and appliances.
Why Choose a Coconut Carbon Block Filter?
Coconut shell carbon offers a tighter pore structure and higher adsorption capacity than granular carbon alternatives, making it highly effective at removing chlorine-related compounds that affect water taste and smell.
Ideal for homes on mains water seeking cleaner, better-tasting water throughout the house, this cartridge is a reliable replacement option for any 20” x 4.5” whole house filtration system.
Under-Sink Filters
Under-sink systems are single point-of-use filters that typically service one dedicated tap in the kitchen. They are a practical choice for families who are strictly concerned about the taste of their drinking water. These systems are usually affordable and easy to maintain, but they offer no protection for the rest of the house.
Because they only filter water at a single point, your shower water remains treated with chlorine, and your hot water system is still vulnerable to scale. They are a partial solution that leaves the majority of your home’s plumbing exposed to contaminants.
Reverse Osmosis
Reverse osmosis (RO) is a highly intensive process that pushes water through a semi-permeable membrane to remove almost all dissolved solids. It is exceptionally effective, but it often removes beneficial minerals alongside the contaminants. This process results in water that can taste “flat” or acidic to some users.
RO systems have a very slow flow rate and waste several liters of water for every liter of clean water produced. These systems are generally overkill for standard Perth residential use and are not suitable for whole-house applications due to the pressure drop and water waste.
Salt-Free Anti-Scale Systems vs Traditional Water Softeners
Traditional water softeners use salt-based ion exchange technology to remove hardness minerals such as calcium and magnesium from the water. These systems require electricity, drainage and ongoing salt replenishment to regenerate the resin media.
Some homeowners also notice the softer, “slippery” feel commonly associated with softened water. Salt-free anti-scale systems work differently. Rather than removing minerals from the water, they aim to reduce the ability of hardness minerals to stick to pipes, fixtures and appliances. Different technologies exist within this category, including template-assisted crystallisation (TAC) media and other anti-scale methods.
It is important to understand that salt-free systems are not true water softeners. They do not remove hardness minerals from the water. Many cartridge-based “softening” filters sold online also have limited resin capacity and can become exhausted quickly under normal household use, particularly in high mineral-content water supplies.
For many Perth homes, a high-quality whole-house filtration system combined with anti-scale protection can be a lower-maintenance alternative to a traditional salt softener, depending on the property’s water usage, hardness levels and goals.
Whole-House 3-Stage Systems
A 3-stage system installs at your property’s entry point, using sequential sediment and carbon filtration to treat every drop before it reaches a tap. This setup addresses Perth’s specific chloramine and sediment issues, protecting your skin in the shower and extending the life of appliances like your dishwasher.
The best whole house water filter systems use three sequential stages to strip these contaminants out before they enter your home’s plumbing.
Stage 1: 1µm Sediment Filter
This captures sand, silt, and rust particles, protecting your appliances from abrasive grit.
Stage 2: 0.5µm PFAS and Chloramine Block
High-grade coconut carbon specifically targets the “sticky” chemicals like chloramine and PFAS that standard filters often miss.
Stage 3: 0.2µm Hydrotech Carbon Block
An ultra-fine polishing stage that removes heavy metals, cysts, and the minerals that cause scale buildup.
This comprehensive approach ensures that every drop, whether for drinking, bathing, or washing, is of the highest possible purity.
Pure₂O Premium Filtration Setup
What to Look For: The Perth Checklist
Perth’s water requires more than a generic filter. To avoid cracking housings or chemical bypass, evaluate systems against these local criteria:
High Flow Rate: Use 20" x 4.5" housings to ensure no pressure drop during simultaneous showers.
Chloramine & PFAS Focus: Requires high-density coconut carbon; standard filters won't remove Perth's specific chemical treatments.
Universal Sizing: Stick to "Big Blue" standards to avoid expensive, proprietary replacement contracts.
Outdoor Rating: Prioritise powder-coated stainless steel to survive intense WA heat and UV.
WaterMark Certified: A legal necessity in Australia to ensure the system handles mains pressure safely.
12-18 Month Lifespan: Quality systems should last over a year; avoid "cheap" units that clog every six months.
Local Configuration: Must be tuned for Perth's specific sediment and mineral profiles.
The Pure₂O EnduraWall was designed specifically for Perth conditions - built for our water, our climate, and our homes.
Limited Time Offer For Perth Customers: Fully Fitted & Installed - Only $2,745 (Was $3,995)
About the Pure₂O Slimline System:
Delivered Australia Wide. Perth’s premium whole-home water filtration system, designed specifically for Perth’s harsh outdoor conditions. The Slimline offers a compact, clean, and professional stainless steel setup - ideal for tight or concealed spaces with top-down pipework. Compatible with all standard 20” x 4.5” filters, meaning no proprietary consumables or lock-in contracts.
What’s Included:
Full Home Water Filtration System
Standard Three-Stage Whole House Filter Set | 20” x 4.5”
Add-Ons & Installation:
Premium Three-Stage PFAS Whole House Filter Set | 20” × 4.5”
Enquire with our team to get a quote for full installation (Greater Perth only)
- Live elsewhere? Ask us for our recommendation of a local installer.
Product Specs:
Compact design suitable for tight or concealed spaces
Ideal for top-down pipework
Clean 306 stainless steel finish
Heavy-duty 20” Big Blue canisters - high-flow, food-grade and BPA-free
Three pressure gauges for easy maintenance
WaterMark Certified
Compatible with all standard 20” x 4.5” filters
High-flow performance up to 75 L/min
Limited Time Offer For Perth Customers: Fully Fitted & Installed - Only $2,945 (Was $3,995)
About The Pure₂O EnduraWall™ - Ironstone
Delivered Australia-wide. An upgraded enclosure for the Pure₂O whole-home filtration system, finished in Ironstone. The EnduraWall is built for the elements - a fully enclosed, double powder-coated stainless steel cabinet that hides all pipework for a clean, modern, and uniquely Australian look. Tamper-resistant and weatherproof, it protects all filtration components from Australia’s harsh sun, sand, and wind.
What’s Included:
Full Home Water Filtration System
Standard Three-Stage Whole House Filter Set | 20” x 4.5”
Free Delivery Australia-Wide
Add-Ons & Installation:
Premium Three-Stage PFAS Whole House Filter Set | 20” × 4.5”
Enquire with our team to get a quote for a full installation (Greater Perth only)
Live somewhere else? - Ask us for our recommendation on a local qualified plumber to install this system.
Product Specs:
Fully enclosed system - hides all pipework
Double powder-coated Stainless Steel
Available finish: Ironstone
Heavy-duty 20” Big Blue canisters - high-flow, food-grade and BPA-free
Three pressure gauges for easy maintenance
Tamper-resistant
WaterMark Certified
Compatible with all standard 20” x 4.5” filters
High-flow performance up to 75 L/min
Limited Time Offer For Perth Customers: Fully Fitted & Installed - Only $2,945 (Was $3,995)
About The Pure₂O EnduraWall™ - Surf Mist
Delivered Australia-Wide. An upgraded enclosure for the Pure₂O whole-home filtration system, finished in Surf Mist. The EnduraWall is built for the elements - a fully enclosed, double powder-coated stainless steel cabinet that hides all pipework for a clean, modern, and uniquely Australian look. Tamper-resistant and weatherproof, it protects all filtration components from Australia’s harsh sun, sand, and wind.
What’s Included:
Full Home Water Filtration System
Standard Three-Stage Whole House Filter Set | 20” x 4.5”
Add-Ons & Installation:
Premium Three-Stage PFAS Whole House Filter Set | 20” × 4.5”
Enquire with our team to get a quote for a full installation (Greater Perth only)
- Live elsewhere? - Ask us about our recommended licensed plumber installers in your area
Product Specs:
Fully enclosed system - hides all pipework
Double powder-coated Stainless Steel
Available finish: Surf Mist
Heavy-duty 20” Big Blue canisters - high-flow, food-grade and BPA-free
Three pressure gauges for easy maintenance
Tamper-resistant
WaterMark Certified
Compatible with all standard 20” x 4.5” filters
High-flow performance up to 75 L/min
How Much Does a Whole House Filtration System Cost in Perth?
A quality whole-house system in Perth typically costs between $4,000 and $5,000, plus roughly $1,200 for installation. Competitors like Complete Home Filtration and Puretec often start around the $4,650 mark.
By comparison, the Pure₂O EnduraWall is priced at $2,695, or $3,995 fully installed by a licensed plumber. Maintenance is simple and contract-free: universal 20” x 4.5” replacement filters cost $349 every 12 to 18 months. This investment pays for itself by extending the lifespan of your appliances and hot water system.
What Matters for Perth Water
Perth’s water requires more than generic filtration. Our supply is treated with chloramine, a persistent chemical that standard filters fail to remove, leaving behind a distinct medicinal smell. Furthermore, PFAS "forever chemicals" detected in local catchments require high-density adsorption media rather than basic carbon. Finally, our hard groundwater causes limescale buildup that destroys appliances; a truly effective system must incorporate anti-scale technology to prevent mineral damage throughout your home.
Choosing the Best System
A basic under-sink filter only fixes your drinking water, leaving you exposed to chemicals in the shower and scale in your pipes. For total protection against Perth’s chloramine, PFAS, and scale issues, a 3-stage whole-house system is the most effective solution. It treats water at the point of entry, ensuring every tap in your home delivers clean, safe water.
Explore our WaterMark-certified 3-stage systems or book a water quality consultation today.
