WFW COMPACT UNDER-SINK FILTRATION
WFW Single Economy Under-Sink Water Filter System
The WFW Single Economy Under-Sink Water Filter System is a compact drinking-water filtration setup designed around one replaceable cartridge housing installed beneath the kitchen sink.
Rather than using separate sediment and carbon housings like a Twin Economy system, the Single Economy uses one treatment cartridge. The filtration capability therefore depends directly on the cartridge selected for the system.
Water Filter World offers standard under-sink cartridge options with different micron ratings and treatment capabilities, allowing the system to be configured around everyday chlorine and taste treatment or a broader manufacturer-listed reduction range.
Quick answer:
the WFW Single Economy is a single-housing under-sink drinking-water filter. It is suited to customers who want a compact conventional cartridge system without the additional pre-filter housing used by a Twin Economy. Choose the cartridge grade according to the treatment you actually require rather than assuming every Single Economy system has the same contaminant-reduction capability.
SYSTEM AT A GLANCE
Single Economy Key Details
1 Housing
Compact Configuration
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Under-Sink
Drinking Water
Replaceable
Cartridge Format
Multiple Grades
Filtration Options
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HOW IT WORKS
One Cartridge Performs the Selected Treatment
Water enters the filter housing, passes through the installed treatment cartridge and is then supplied to the filtered-water outlet.
Because there is only one housing, the cartridge selected determines the system's main treatment function.
Basic Filtration
A basic carbon cartridge can be used where chlorine and unwanted taste, colour or odour are the main concerns.
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Finer Filtration
Water Filter World also offers finer 0.5 micron cartridge options with additional manufacturer-listed reduction capabilities.
Single-Housing Design
The compact arrangement uses less cabinet space than a twin-housing under-sink filtration system.
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COMPACT CLASSIC FILTRATION
A Straightforward Alternative to Multi-Housing Systems
The Single Economy configuration is intended for customers who want conventional under-sink cartridge filtration without installing multiple filter housings.
This keeps the physical system simple while still allowing the treatment cartridge to be changed when its service period is reached.
Where separate sediment pre-filtration is required before the carbon stage, a Twin Economy configuration may be more appropriate because it provides a dedicated first-stage sediment cartridge.
CARTRIDGE SELECTION
Choose the Filter by Treatment Requirement
Water Filter World's current replacement-cartridge range includes different grades of drinking-water treatment media.
| Cartridge Option |
Micron Rating |
Manufacturer-Listed Treatment |
| Basic Grade |
1 micron |
Chlorine, unwanted taste, colour and odour |
| Mid-Grade |
0.5 micron |
Chlorine, unwanted taste, colour and odour, plus Giardia and Cryptosporidium cyst reduction |
| High-Grade |
0.5 micron |
Broader WFW-listed treatment including chlorine, unwanted taste, colour and odour, lead, heavy metals, Giardia and Cryptosporidium, PFOS and PFOA |
Do not apply High-Grade claims to every Single Economy system.
The actual reduction capability is determined by the cartridge ordered and installed.
BASIC GRADE
1 Micron Everyday Carbon Treatment
Water Filter World's 1 micron Basic-Grade cartridge is intended for straightforward drinking-water filtration where chlorine and unwanted taste, colour or odour are the main treatment priorities.
- 1 micron nominal filtration
- Chlorine treatment
- Unwanted taste treatment
- Unwanted colour treatment
- Unwanted odour treatment
This cartridge should not automatically be described as providing the heavier-metal or cyst treatment associated with Water Filter World's higher-grade options.
MID-GRADE
0.5 Micron Carbon with Cyst Reduction
Water Filter World's 0.5 micron Mid-Grade cartridge adds finer filtration and manufacturer-listed Giardia and Cryptosporidium cyst reduction.
It also retains the carbon-treatment functions used for chlorine and unwanted taste, colour and odour.
HIGH-GRADE
0.5 Micron Cartridge with a Broader Treatment Specification
The WFW High-Grade cartridge is the option to consider where the broader manufacturer-listed treatment range is specifically required.
Water Filter World lists the High-Grade cartridge for treatment including:
- Chlorine
- Unwanted taste, colour and odour
- Lead
- Heavy metals
- Giardia and Cryptosporidium cysts
- PFOS and PFOA
Treatment claims apply within the cartridge's operating conditions and should not be interpreted as universal removal of every substance at every concentration.
NOT A FIVE-HOUSING SYSTEM
Understand What “Multi-Stage” Can Mean
The Single Economy has one physical filter housing.
Some specialised cartridges contain multiple types of treatment media or perform several treatment functions inside one cartridge, but this does not mean the system contains five separate filter housings or five independently replaceable stages.
Check the exact cartridge rather than relying on a generic “5-stage” description.
The product's real performance should be described by the manufacturer's listed cartridge specification.
UNDER-SINK APPLICATION
Designed for Drinking Water at the Kitchen
The Single Economy is a point-of-use filtration system rather than a whole-house water filter.
It is designed to be positioned inside the kitchen cabinet and connected to the cold-water supply so filtered water can be delivered to an appropriate filtered-water outlet.
- Compact single-housing installation
- Cold-water connection
- Suitable isolation point
- Access for cartridge replacement
- Suitable filtered-water faucet or compatible outlet arrangement
- Cabinet clearance below the housing for servicing
SINGLE VS TWIN
Which Economy System Suits the Installation?
| Feature |
Single Economy |
Twin Economy |
| Filter Housings |
1 |
2 |
| Cabinet Space |
Lower requirement |
More space required |
| Dedicated Sediment Pre-Filter |
Not automatically included |
Used as first stage in the Twin configuration |
| Carbon Treatment |
Selected main cartridge |
Separate second-stage cartridge |
| Best Suited To |
Compact straightforward filtration |
Separate pre-filtration and carbon treatment |
WHAT IT DOES NOT AUTOMATICALLY DO
Keep Treatment Claims Matched to the Cartridge
- Heavy-metal treatment is not standard with every cartridge
- PFOS and PFOA treatment depends on the High-Grade cartridge
- Giardia and Cryptosporidium reduction depends on the cartridge selected
- It is not a reverse-osmosis system
- It does not automatically remove dissolved hardness
- It does not automatically include an alkaliser
- It is not a whole-house filtration system
- It does not require multiple cartridge changes unless additional stages are added
OPTIONAL ALKALISER
Pi Bio Life Mineralisation Can Be Added Separately Where Compatible
Water Filter World offers the Pi Bio Life Alkaliser for compatible drinking-water filtration systems.
The manufacturer describes it as a mineralisation cartridge that can raise the pH of filtered water and lists a flow of approximately 2–3 litres per minute, an operating pressure range of 20–100 psi and a listed service life of up to 24 months.
An alkaliser is an additional treatment component.
It should not be described as standard equipment on the Single Economy unless it is specifically included in the product configuration ordered.
INSTALLATION REQUIREMENTS
What the Under-Sink Installation Needs
- Suitable space inside the kitchen cabinet
- Accessible cold-water supply
- Serviceable isolation valve
- Room to remove the filter housing during servicing
- Suitable filtered-water outlet arrangement
- Sound existing plumbing
- Accessible connection points
- Provision for any optional additional filtration stage
INSTALLATION
Supply Only or Professional Installation
The Single Economy can be ordered as a filtration product where you already have a suitable installation arrangement.
Professional under-sink installation may also be selected where available. This can include connecting the filter to the existing cold-water supply, positioning the system for future servicing, fitting the applicable filtered-water outlet and checking the completed installation for leaks.
Installation conditions vary between kitchens.
Existing plumbing repairs, difficult cabinet access, stone drilling, tap changes or significant pipework alterations may require additional work.
MAINTENANCE
One Cartridge Makes Routine Servicing Straightforward
Routine maintenance involves replacing the installed cartridge when required rather than changing multiple independent filter stages.
- Turn off the applicable water supply
- Release water pressure through the filtered-water outlet
- Open the filter housing
- Remove the used cartridge
- Inspect the housing and sealing O-ring
- Install the correct replacement cartridge
- Ensure the cartridge is correctly seated
- Reassemble the housing
- Restore water gradually
- Flush according to the cartridge instructions
- Check the housing and fittings for leaks
REPLACEMENT INTERVAL
Cartridge Life Depends on the Filter Selected
A single generic replacement period should not be applied to every WFW cartridge.
Practical cartridge life depends on the treatment media, incoming water conditions, water consumption and the manufacturer's rated service guidance for the exact cartridge installed.
Water Use
Higher drinking-water consumption places more demand on the cartridge.
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Incoming Water
Chlorine level, sediment and other source-water conditions affect cartridge loading.
Cartridge Grade
Basic, Mid-Grade and High-Grade cartridges use different media and treatment specifications.
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SYSTEM SPECIFICATIONS
WFW Single Economy Details
| Specification |
Detail |
| Brand |
Water Filter World / WFW |
| Application |
Under-sink drinking-water filtration |
| Configuration |
Single replaceable-cartridge housing |
| Basic Cartridge |
1 micron carbon treatment option |
| Mid-Grade Cartridge |
0.5 micron carbon treatment option |
| High-Grade Cartridge |
0.5 micron broader-treatment carbon option |
| Sediment Pre-Filter |
Not a separate standard stage in the single-housing configuration |
| Reverse Osmosis |
No |
| Pi Bio Life Alkaliser |
Optional additional component where compatible |
| Installation |
Under kitchen sink on suitable cold-water plumbing |
CERTIFICATION
Confirm WaterMark Status Against the Exact Package
Water Filter World supplies a broad range of filtration systems and plumbing components, and certification can vary between models and product generations.
If WaterMark documentation is required for this installation, confirm the certification details for the exact Single Economy housing, faucet and plumbing components being supplied rather than assuming certification from another WFW product range.
BEFORE ORDERING
Check These Details First
- You want a compact single-housing under-sink system
- You have selected the correct cartridge grade
- You understand there is no separate sediment stage unless added
- You have adequate cabinet space for servicing
- A suitable cold-water supply is available
- You have confirmed the filtered-water outlet arrangement
- Any optional alkaliser has been allowed for
- The selected cartridge addresses your actual treatment requirements
ORDERING OPTIONS
Choose How You Want to Order
Supply Only
Order the WFW Single Economy for delivery to supported Australian locations where you already have a suitable installer or installation arrangement.
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Choose Your Cartridge
Select Basic, Mid-Grade or High-Grade filtration according to the manufacturer-listed treatment functions you require.
Supply & Installation
Professional under-sink installation may be available in eligible Brisbane and Gold Coast service areas, subject to cabinet and plumbing access.
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COMMON QUESTIONS
Questions About the WFW Single Economy Under-Sink Filter
How Many Filter Housings Does It Have?
One. The Single Economy uses one replaceable treatment cartridge.
Is It the Same as the Twin Economy?
No. The Twin Economy adds a separate first-stage sediment housing before the carbon treatment stage.
What Does the Basic Cartridge Treat?
Water Filter World's 1 micron Basic Grade cartridge is listed for chlorine and unwanted taste, colour and odour treatment.
What Is the Mid-Grade Option?
The Mid-Grade option uses a 0.5 micron cartridge and adds WFW-listed Giardia and Cryptosporidium cyst reduction.
What Is the High-Grade Option?
The 0.5 micron High-Grade cartridge is listed by WFW for a broader treatment range including lead, heavy metals, Giardia and Cryptosporidium, PFOS and PFOA in addition to carbon treatment functions.
Does Every Version Remove Heavy Metals?
No. Heavy-metal treatment should only be claimed where the High-Grade cartridge or another specifically rated cartridge is installed.
Does It Have a Sediment Filter?
The standard Single Economy does not have a separate dedicated sediment pre-filter housing. For two separate stages, consider the Twin Economy configuration.
Is It Reverse Osmosis?
No. It is a cartridge filtration system and should not be described as reverse osmosis.
Can I Add an Alkaliser?
Water Filter World offers the Pi Bio Life Alkaliser for compatible drinking-water systems. Additional cabinet space and plumbing are required.
Does the Pi Bio Life Alkaliser Provide Medical Benefits?
This listing describes the cartridge by its practical filtration function: mineralisation and pH adjustment. It does not make medical, detoxification or wellness claims.
How Often Should the Filter Be Replaced?
Follow the service guidance for the exact cartridge installed. Water quality, consumption and treatment demand all influence practical cartridge life.
Can It Fit Under Most Kitchen Sinks?
The single-housing configuration is relatively compact, but cabinet dimensions and required service clearance should still be checked before ordering.
Can It Be Installed on Rainwater?
Compatibility depends on the incoming rainwater conditions and intended use. A single carbon cartridge should not be assumed to address every rainwater-treatment requirement.
Can Installed Today Install It?
Professional installation may be available in eligible Brisbane and Gold Coast service areas where the existing plumbing and cabinet access are suitable.
Can I Buy It Without Installation?
Yes. Supply-only ordering is available for supported Australian delivery locations.
Is a Filtered-Water Tap Included?
Confirm the exact package selected at the time of ordering, as tap and fitting inclusions can vary between system configurations.
WHY INSTALLED TODAY
Choose the Cartridge You Need, Then Choose How You Want It Supplied
Supply Only Available
Purchase the filtration system without adding installation where you already have a suitable installer or servicing arrangement.
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Clear Cartridge Options
Basic, Mid-Grade and High-Grade treatment claims are kept separate so the filtration level can be selected around the actual requirement.
Installation Capability
Installed Today can also support eligible local installations where cabinet space, cold-water plumbing and the selected filtration configuration are suitable.
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FINAL CHECK
Is the WFW Single Economy Under-Sink System Right for Your Kitchen?
The WFW Single Economy Under-Sink Water Filter System is designed for customers wanting a compact, conventional drinking-water filter with one replaceable treatment cartridge.
The cartridge selected determines what the system does. Water Filter World offers a 1 micron Basic Grade for chlorine and unwanted taste, colour and odour, a 0.5 micron Mid-Grade with additional cyst reduction and a 0.5 micron High-Grade with a broader manufacturer-listed treatment range.
Before ordering, choose the filtration grade that matches your requirements, check cabinet and servicing space, confirm the filtered-water outlet arrangement and decide whether a single cartridge is sufficient. Where a dedicated sediment stage is wanted before carbon treatment, the Twin Economy system provides the more appropriate two-housing configuration.
