MWF 20" x 4.5" Twin Big Blue Whole House Rain Water Tank Water Filtration System

The beauty of this whole house rainwater system is the cartridge is fully tested for bugs, bacteria & virus. So now you can feel confident in your rain water supply you do not need to waste time & money on electricity from a UV light system. This system will block & take care of those contaminants for you. So you can enjoy fresh filtered rain water.

This Whole House Twin 20" x 4.5" Water Filter System is suitable for households who want to remove both incoming sediments and odor from their water supply. It is a whole house filter that is built specifically to filter sediments, cysts, bugs, bacteria & virus, herbicides & pesticides and reduce any taste, odor or smell from the entire water supply. It is recommended for the whole house. Great for people who want to get clean water throughout their entire home.

The BIG problem with our RAIN water supplies today

What Makes This Product Unique

• It is very user friendly.
• You don't need to use any electricity.
• The cartridges are fully tested & certified.
• There is a place to fit a gauge if you require a gauge.
• It comes standard with strong brass steel ports.
• Complete with a 5 year housing warranty.
  

Filters

Stage 1: 1 Micron Pleated Sediment Cartridge

The 1 Micron Pleated Sediment Cartridge is capable of removing algae, dirt, particles, rust, sand, sediment, silt and cysts so your water is debris free and prepared for the second stage of this filtration process. This pleated filter cartridge holds more sediment than normal polyspun sediment cartridges, it can be gently rinsed clean as required to enable the cartridge to last longer.

Cartridge Information

Filter cartridge manufacturers rate cartridges in "microns". Microns are a size measurement of the pore size, so the smaller the number, the tighter the filter. 

Filter cartridge manufacturers also use the words "absolute" and "nominal" to describe their products' micron ratings. Absolute means absolute. Nominal means "more or less."

Sediment Cartridges Remove

• Algae

• Dirt

• Particulate matter

• Rust

• Sand

• Sediment

• Silt

Please note: Do not rely on sediment cartridges to filter untreated or unknown water sources for human consumption.

Cartridge Style

These cartridges will fit inside all industry standard housings for the appropriate size.

Stage 2: Disruptor® Specialty Cartridge

The 20" x 4.5" Disruptor® whole house water filtration replacement water filter cartridge, made for Australian homes, is engineered to provide exceptional contaminant removal through its patented Disruptor® filtration technology. This larger, high-capacity filter integrates multiple advanced filtration methods - electroadsorption, depth filtration, nanofiber surface area for fine filtration, and submicron filtration - creating a comprehensive system that tackles even the most challenging contaminants in your water.

Designed to reduce over 98% of PFAS compounds, including PFOA and PFOS, as well as removing viruses, bacteria, parasites, heavy metals, chlorine, and chloramines, this filter provides safe, clean water for households, businesses, and larger water filtration needs. With a capacity of 300,000 litres, the 20" x 4.5" Disruptor® is ideal for higher-volume filtration without compromising on performance.  

Test Results:

• PFOS (Perfluorooctane Sulfonic Acid): > 99.0%

• PFOA (Perfluorooctanoic Acid): > 98.9%

• Lead (Pb): > 99.4% @pH 6.5 and pH 8.5

• E.Coli (Total Coliforms): > 99.9999%

• Coliphage (Bacterial Virus): 99.9995%

• Total Chlorine (Chloramines): > 99.3%

• Free Chlorine: > 99.5%

• Copper (Cu): > 99.9% @pH 6.5 and pH 8.5

Certification:

• Tested to NSF/ANSI 42 & 53 Standards for both aesthetic effects and health effects.

• Designed in Australia, made with German and Swedish components to ensure the highest quality and performance.

Service Life: 300,000 Litres

The Disruptor® 20" x 4.5" Filter Cartridge has an estimated service life of 300,000 litres, depending on your water quality and usage. Replace the cartridge when you notice any change in water taste, smell, or pressure drop.

Cartridge Replacement:

• Replace every 300,000 litres or 12-18 months, depending on usage—whichever comes first.

• Signs it's time to replace: Noticeable changes in water quality, including taste, odor, or water pressure.

• No special tools needed for replacement—simply remove and replace the old cartridges.

• Consider our Auto Cartridge Replacement Service for peace of mind—get automatic reminders and easy delivery.

Why Choose This Product?

• Advanced Filtration Technology: The Disruptor® filter provides multi-stage filtration with electroadsorption to capture even submicron contaminants.

• Comprehensive Contaminant Removal: Tackles a wide range of contaminants, including PFAS, chlorine, bacteria, viruses, and heavy metals.

• High Capacity for Larger Needs: With a service life of 300,000 litres, this filter is ideal for higher-volume filtration.

• DIY-Friendly: No professional installation required—just a quick and easy swap!

• Certified and Tested: Meets rigorous testing standards to ensure safe and clean drinking water.

Filtration results

The Big Blue High Flow Twin 20” x 4.5” whole house water filter has the capacity to remove that unwanted chlorine taste and smell from your water.

The great benefits to you are:

• No poisonous chlorine gas smell when you shower

• Softer water for showers, clothes washing 

• Smoother skin, softer hair, less intake of chlorine gas

• Chlorine free water for cooking & rinsing food at the kitchen sink

Stainless Steel Cover

While our whole-house water filter delivers exceptional results, consider adding an optional stainless steel cover for an extra layer of benefits. Built for the harsh Australian climate, a stainless steel cover is the perfect upgrade to elevate your home's exterior and safeguard your water filtration system.

Features:

• Rust and corrosion resistant
• UV protection to extend filter life
• Tamper-resistant design
• Withstands extreme temperatures
  

Benefits:

• Longer system lifespan
• Enhanced durability over powder-coated options
• Sleek, modern look to complement your home
• Easy installation
  

Installation

When installing or replacing any water filter cartridges, ensure the main water supply is turned off prior to starting. Ensure you know what you are doing or have a qualified person to help you.

How to Install a Whole House Water Filter

What Tools we use for a Whole House Water Filter Installation

Maintenance and Replacement Cartridges

The Big Blue High Flow Twin 20” x 4.5” is guaranteed to deliver clean and safe drinking water for over five years. Cartridges are very easy to replace and need to be changed over every 12-18 months, depending on your water quality and usage.

Should I buy a cartridge pack instead?

It is always a wise option to purchase your cartridges in one go as opposed to buying individual cartridges. We have made the process easier for you by providing our customers with Cartridge Packs. This not only saves you money with a bulk purchase & delivery, but it also saves you time and effort not dealing with another transaction or two. The environment is happy also.

Long lasting service life of 12 months

Cartridges are very easy to replace and only have to be changed every 12-18 months. When this time comes around we will be in contact with you, so it's basically hands-free water filtration if you deal with us.

Save Money

Save by buying all the cartridges you need in one go. Save by not having to waste money on buying bottled water.

Fully Disposable Cartridges

Wrap your worn out cartridges up and place into your rubbish bin.

Automatic Cartridge Replacement Service

When you invest in a water filtration product from MWF, we like to ensure you have the best experience possible. We like to lend a hand & take care of you the best we can.

• We happily monitor the cartridge life for you

• When the cartridge is due for renewal, we then contact you

• Once confirmed, we arrange everything and have a new replacement cartridge delivered to your door.

The My Water Filter® Difference

“We love our products and what we do so below are just some of the things we do to make a difference”

We Give Together

When you buy a water filter or home water solution from My Water Filter®, at no extra cost to you, we give life changing drinking water to people in need on your behalf.

Bit by bit we make a difference together. Check out our Giving page here.

“We also deliver our products for FREE and you get a 30-day money back guarantee. The product comes with free insurance too!”

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Our 10 Guarantees
30 Day Money Back Guarantee
5 Years Warranty