CTO Max Twin Under Sink Water Filter – Double Chemical & Lead Guard
$539.00 inc. GST
Choosing the right filter isn’t easy when chlorine taste, old pipes, and chemical by-products all come into play. This twin undersink water purifier uses two high-end carbon cartridges to deliver double protection against lead, chlorine, odours, and VOCs.
- UK-made CTO Max ceramic & carbon block filter to reduce fluoride by up to 88.9%, plus chlorine, chloramine, PFAS, microplastics, heavy metals and bacteria.
- US-made Omnipure Carbon Block to remove Chlorine, Volatile Organic Compounds (VOCs), Lead, Cysts, and harmful chemicals.
- Tested & certified to NSF/ANSI 53 & NSF/ANSI 42 standards.
- Includes Leak Stopper & Filter Life Monitor ($99 value) for total peace of mind.
- Includes sleek Retro High Loop chrome filter faucet ($79 value)
- Hand-built in Sydney, backed by a 5-year housing warranty, and fully compliant with Watermark standard AS/NZS 3497:1998.
- DIY-friendly setup – install this under sink filter with basic tools, or have a plumber do it for you. It’s simple either way.
- Replace filters every 6-12 months.
Description
Specifications
- Filter life CTO Max: 6 months or 10,000 litre
- Filter life Omnipure OMB834: 12 months or 7,540 litres
- 0.9 Micron (CTO Max) 1 Micron (OMB)
- Maximum flow rate: 2.5 litres per minute
- Warranty: 5 years (housing)
- Temperature Range: 2°C – 38°C
- Dimensions: 23(W) x 34 (H) x 13(D)
- Watermark Certificate Number: 23124
Certified Under Sink Water Filtration
This system meets the WaterMark specification AS/NZS 3497:1998 Amdt 1 2001 Drinking water treatment unit – Plumbing requirements.
Certificate Number 23124.
- Fluoride
- PFAS
- Aluminium
- Barium
- Cadmium
- Chloramines
- Chlorine
- Chromium
- Copper
- Cryptosporidium & Giardia
- Cysts
- e. Coli Bacteria
- Heavy Metals
- Hydrocarbons
- Iron
- Lead
- Manganese
- Mercury
- Microplastics
- PCB’S
- Radium
- Sediment, Dirt & Rust
- Selenium
- Fluoride
- PFAS
- Aluminium
- Barium
- Cadmium
- Chloramines
- Chlorine
- Chromium
- Copper
- Cryptosporidium & Giardia
- Cysts
- e. Coli Bacteria
- Heavy Metals
- Hydrocarbons
- Iron
- Lead
- Manganese
- Mercury
- Microplastics
- PCB’S
- Radium
- Sediment, Dirt & Rust
- Selenium
Everything You Want to Know
What's included in the system?
The system comes complete with the first set of filters, housing, leak stopper & filter life monitor, faucet, hoses, screws, locking clips, and all components required for installation (excluding tools).
How often do I need to change the cartridges and how much do they cost?
Coldstream CTO Max cartridge: Every 6 months ($120 – discounted twin set available).
Omnipure Carbon Block Filter Cartridge OMB-834 1M Lead Every 12 months or 7,570 Litres ($49).
Can I install this under sink filter myself?
Yes, you can install this undersink water purifier yourself if you have basic plumbing skills. It’s WaterMark approved, meaning it meets Australian plumbing standards. If you prefer, your local licensed plumber can install it for you as well.
What contaminants does it remove?
This system focusses on heavy metal water filtration and chemicals. It filters out over 130 contaminants with targeted protection against Chlorine, Lead and VOC for maximum safety. Key removals include Fluoride, PFAS, Bacteria, Viruses, Microplastics, Chlorine, and heavy metals.
How do I replace the cartridge?
Simply twist open the housing, remove the old cartridge, insert the new one, and twist the housing closed. No special tools are required — and a filter wrench is included to make the process even easier. It’s quick and straightforward.
Replacement Filter Cartridges for
CTO Max Twin Under Sink Water Filter – Double Chemical & Lead Guard
The system requires 1 of these cartridges to be replaced every 6 months or 10,000 litres, dependent on water quality.
Remove Fluoride and Chlorine with only one cartridge! CTO MAX cartridge removes over 130 Chemicals incl. Chlorine, Chloramine, and Fluoride, along with Bacteria, Virus, PFAS, Microplastics, Heavy Metals. Suitable for our Benchtop and Undersink water filter systems.
Tested and certified to NSF/ANSI 42 and NSF / ANSI 53 for Chemicals, PFAS, Microplastics.
The system requires 1 of these cartridges to be replaced every 12 months or 7,570 litres, dependent on water quality.
The Omnipure OMB-834 water filter removes Chlorine, Volatile Organic Compounds (VOCs), Lead, Cysts, and harmful chemicals. This compact yet efficient filter uses a high-quality carbon block to improve taste, eliminate odours, and reduce contaminants. Compatible with our Benchtop and Undersink water filter systems, it features a premium coconut shell carbon construction for superior filtration.
Tested and certified to NSF/ANSI 42.
3 Simple Steps to Safer Water — with Free Shipping Australia-Wide:
Join our Pure Water Tribe – Choose your custom water filter system and become part of a community that values clean, safe water.
Crafted for you in Sydney – Our team hand-builds your water filter to order and ships it with tracking, so you know its on its way.
Install your water filter simply, turn on your tap and feel at home with others who trust what they drink.
How We Got Here And Why It Matters
We’re a family business built on firsthand experience and a genuine commitment to better wellbeing through clean water. With over 40 years of combined expertise and nearly a decade in business, we’ve helped thousands of families choose the right water filter system. We offer clear, honest advice and products we truly stand behind and use ourselves.
One Tap, Zero Extra Holes
Your system includes a standard filter tap. If you prefer to avoid drilling an extra hole, you can choose one of these 3-way mixer upgrades.
All our under sink water filter taps include a base plate and connection fittings.
* PLEASE NOTE: the width (W) refers to the dimension from the centre line of the tap body to the centre of the spout.
Side Lever High Loop 3-Way Mixer Chrome
The Side Lever High Loop 3-Way Mixer in Chrome features a sleek design, providing hot, cold, and filtered water from a single tap.
203mm W x 365mm H
Side Lever Long Reach 3-Way Mixer Chrome
The Side Lever Long Reach Mixer Tap features a simple yet elegant design, providing hot, cold, and filtered water from a single tap.
195mm W x 325mm H
Stainless Steel 3 Way High Loop Matte Black Mixer Tap
The Stainless Steel 3 Way Mixer Tap with high loop in a matte black finish, providing hot, cold and filtered water from a single tap.
225mm W x 400mm H
Designed to Be Straightforward - With Support When You Want It
Our systems are designed for people who want to create a safe home without overcomplicating things. Everything is thoughtfully built so installation is logical and achievable. You can choose to connect the system yourself or have your local plumber handle the install.
- We build it. You connect it.
- Our step-by-step guide, backed by local Australian support, means you’re never left guessing.
Choosing Living Whole means joining a community that values better water, every day.
Component Diagram
- A – Coldstream CTO Max Cartridge – made in UK
- B – Omnipure OMB834 – made in USA
- 1 – Housing Sump
- 2 – Housing Cap
- 3 – Stainless Steel Bracket
- 4 – Pressure Limiting Valve (PLV)
- 5 – John Guest Elbow (with red clips)
- 6 – Brass Nipple
Data Sheets & Test Reports
Additional information
| Weight | 2 kg |
|---|---|
| Dimensions | 33 × 32 × 13 cm |
| Choose Size: | 9 Inch, 10 Inch |
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CTO Max Twin Under Sink Water Filter with Fluoride Removal and Alkaliser
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- Price range: $539.00 through $569.00 inc. GST
- Select options This product has multiple variants. The options may be chosen on the product page
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