CTO Twin Water Filter with Carbon
  • CTO Twin Water Filter with Carbon
  • CTO MAX Filter Cartridge orig. Packaging
  • Omnipure OMB 834 Carbon Block Replacement Cartridge

CTO Max Twin Under Sink Water Filter with Chlorine & Fluoride Removal – 9 Inch

Featuring the Coldstream CTO Max, this system removes Chlorine, Chloramines, Sediment, Fluoride, PFAS, Microplastics,  Chemicals, Pesticides, Heavy Metals, and Bacteria.

  • Retains all beneficial minerals
  • Enhances taste/odour
  • Perfect for town water
  • Filter life of the included UK made  Coldstream CTO Max 10,000 litres,
  • Filter life of the included US made Omnipure OMB-834 1Micron: 3,800 litres,
  • Filters made in UK and USA
  • Handbuilt in Australia from high-quality materials that are designed to last
  • 5 year warranty on housing
  • NSF certified BPA free housing
  • Easy to maintain with replacement filters readily available and fitted quickly
  • Meets WaterMark specification AS/NZS 3497:1998
  • Filter tested and certified to NSF/ANSI 42 for chlorine, bad taste and odour removal
  • Filter tested and certified to NSF / ANSI 53 for chemicals, PFAS (PFOA & PFOS), microplastics, pesticides, and heavy metal removal

The CTO Twin under sink water filter provides a high-quality, affordable option for water filtration for both the home and office. This under counter water filter system is designed for excellent water purification, convenient installation and use.

The first stage is CTO Max – a powerful 3-in-1 carbon block filter that removes sediment, fluoride, chlorine, and harmful chemicals while improving taste and odour.
The second stage uses a premium Omnipure carbon block for additional chemical removal and final polish, ensuring your water is crisp, pure, and safe. Compact and installed neatly under your sink, it’s an ideal solution for any home on town water looking for reliable, everyday water purification.

With its simplified dual-filter process, our CTO Twin Undersink filter with fluoride removal delivers cost-effective and highly effective filtration in a discreet, space-saving setup.

  • Dual stage filtration process combines sediment, fluoride, chemical removal
  • Compact housing fits discreetly under the sink, keeping counters clutter-free.
  • System connects to a separate chrome faucet installed beside your existing sink fixture for easy filtered water access, or attaches to your 3-way mixer tap.

Specifications:

  • Filter output 5,000 litres
  • Maximum flow rate: 3 litres per minute
  • Dimensions: 23(W) x 32 (H) x 13(D)
  • Micron Rating: 1 micron
  • Warranty: 5 years (housing)
  • We recommend that the filter cartridge be replaced every 6-12 months depending on water quality and usage.
NSF Watermark certified
NSF Watermark certified

 

Replacement filter details can be found here.

Choose the tap for your under sink water filter

Retro with High Loop Spring Loaded Black Lever Chrome +$16.00 Metro with High Loop Chrome +$19.00 Antique with High Loop +$19.00 Fin with Long Reach +$24.00 Mode with high Loop +$36.00 Euro with High Loop +$56.00 Euro with Long Reach +$56.00 Side Lever High Loop Mixer Tap +$389.00 Side Lever Long Reach Mixer Tap +$319.00

$409.00 inc. GST

SKU: IT007290 Categories: , ,

Description

1st Stage of Filtration: Coldstream CTO Max - Made in UK

Remove Fluoride and Chlorine with only one cartridge! The KLT Coldstream CTO MAX water filter is an All-in-One filter removing 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, it features a unique design that utilises a two-part construction: Outer ceramic layer with antimicrobial properties and Inner carbon core for chemical contaminant protection. 

Tested and certified to NSF/ANSI 42 and NSF / ANSI 53 for Chemicals, PFAS, Microplastics.

2nd Stage of Filtration: Omnipure OMB-834 - Made in USA

The Omnipure OMB-834 water filter offers powerful filtration, removing 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, ensuring cleaner, safer water for everyday use. Compatible with our Benchtop and Undersink water filter systems, it features a premium coconut shell carbon construction for superior filtration performance and long-lasting protection.
When paired with the CTO MAX, the Omnipure OMB-834 enhances your water filtration system by providing additional layers of protection.

Tested and certified to NSF/ANSI 42.

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
  • Nitrate
  • PCB’S
  • Potassium
  • Radium
  • Sediment, Dirt & Rust
  • Selenium
  • Sodium
  • Fluoride
  • PFAS
  • Aluminium
  • Barium
  • Cadmium
  • Chloramines
  • Chlorine
  • Chromium
  • Copper
  • Cryptosporidium & Giardia
  • Cysts
  • e. Coli Bacteria
  • Heavy Metals
  • Hydrocarbons
  • Iron
  • Lead
  • Manganese
  • Mercury
  • Microplastics
  • Nitrate
  • PCB’S
  • Potassium
  • Radium
  • Sediment, Dirt & Rust
  • Selenium
  • Sodium
WaterMark Certification
NSF Certification

Replacement Filter Cartridges for
Doulton Twin Under Sink Water Filter with Fluoride Removal

Important Note: When changing cartridges it is very important that the new Coldstream CTO cartridge be flushed alone in the system for 10 – 15 minutes before adding the Doulton Ultracarb back into the system.  This prevents the flushing from the fluoride cartridge running through the next stage.

Coldstream CTO Max Replacement

The system requires 1 of these cartridges to be replaced every 10,000 litres or 6 months depending on water quality

Coldstream CTO Max
Buy Here

Omnipure OMB-834 Replacement

The system requires 1 of these cartridges to be replaced every 5,000 litres or 12 months depending on water quality.

Buy Here
Doulton Twin Under Sink Water Filter Ultracarb with fluoride removal component diagram

Doulton Twin Under Sink Water Filter with Fluoride Removal Components

  • A – Coldstream CTO Filter cartridge
  • B – Omnipure OMP-834 Filter Cartridge
  • 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

Choose Your Under Sink Water Filter Tap

All our under sink water filter taps feature a chrome finish and 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.

Chrome Spring Loaded Faucet with Black Lever

Spring Loaded with Long Reach

Standard Spring Loaded faucet with black lever, in a long reach design.

200mm W x 210mm H

Chrome Mode Faucet with High Loop

Mode

Standard Mode faucet in a high loop design.

150mm W x 290mm H

Chrome Retro Faucet with High Loop and Long Reach

Retro

Standard Retro faucet in a high loop design and long reach.

125mm W x 235mm H

Chrome Euro Faucet with Long Reach

Euro with Long Reach

Standard Euro faucet in a long reach design.

150mm W x 230mm H

Chrome Euro Faucet with High Loop

Euro with High Loop

Standard Euro faucet in a high loop design.

150mm W x 230mm H

Chrome Metro Faucet with High Loop

Metro

Standard Metro faucet in a high loop design.

160mm W x 250mm H

Chrome Antique Faucet with High Loop

Antique

Standard Antique faucet in a high loop design.

125mm W x 235mm H

Chrome Fin Faucet with Long Reach

Fin

Standard Fin faucet in a long reach design.

135mm W x 250mm H

Installation Guides

Twin Undersink Installation Instructions
Twin Undersink Maintenance Guide
Drinking Water Faucet Installation Guide

Data Sheets & Test Reports

CTO Max Test Results

Additional information

Weight2 kg
Dimensions33 × 32 × 13 cm
Choose Size:

9 Inch, 10 Inch

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