Doulton Single Under Sink water filter Ultracarb
  • Doulton Single Under Sink water filter Ultracarb

CTO Max Single Under Sink Water Filter

(4 customer reviews)

Still pouring chlorine into your glass every day? When you’re committed to clean living, even the water you cook with or brush your teeth with matters.

That’s why we created the CTO Max Single Undersink Water Filter. Handbuilt in Sydney and fitted with premium carbon cartridges made in the UK, this discreet system removes chlorine, PFAS, microplastics, and heavy metals—delivering clean, fresh-tasting water straight from your tap.

Neatly installed under the sink, it keeps your benchtop clutter-free while providing trusted filtration backed by NSF certification and a 5-year housing warranty.

Because clean living should be empowering — not overwhelming.

 

Here’s How It Works:

  1. Choose the CTO Max Single Undersink Filter.
  2. Install it under your sink – either yourself or with a local plumber.
  3.  Enjoy clean, great-tasting water on demand.

 

What Happens If You Don’t Filter Your Water?

You’ll keep second-guessing every glass, and every meal you cook, wondering what’s really in your water. Those trace chemicals can quietly build up over time, affecting your body and peace of mind.

 

What Happens If You Do?

You’ll feel confident and in control, knowing that every glass of water is clean, clear, and free from what doesn’t belong. No more guesswork. Just everyday peace of mind, the way it should be.

Orders yours today and take the next step toward clean, empowering living.

 

Why choose the CTO Max Single?

  • Toxin Removal: A specialised cartridges works to reduce up to 99.9% of chlorine and other contaminants.
  • High-Performance CTO Filtration: Removes chlorine, chloramine, PFAS, microplastics and organic contaminants – for pure water you actually enjoy to drink.
  • NSF / ANSI 53 & NSF/ANSI 42 certified cartridges from trusted UK manufacturer Coldstream
  • Handbuilt in Sydney with 5-year warranty on housing
  • Simple DIY-Friendly Setup. Just basic tools required and comes with clear instructions – no fuss, no plumber needed. Fully compliant with WaterMark specification AS/NZS 3497:1998

 

 

NSF Watermark certified

NSF Watermark certified

 

 

Choose the tap for your under sink water filter

Retro with High Loop Spring Loaded Black Lever Chrome +$10.00 Metro with High Loop Chrome +$20.00 Antique with High Loop +$20.00 Fin with Long Reach +$30.00 Mode with high Loop +$50.00 Euro with High Loop +$90.00 Euro with Long Reach +$90.00 Side Lever High Loop 3 Way Mixer Chrome +$409.00 Side Lever Long Reach 3 Way Mixer Chrome +$349.00 Stainless Steel Premium Mixer Tap +$309.00 3-Way Mixer Tap Standard Chrome +$319.00 New Nova 3-Way Mixer Tap Polished Chrome +$309.00 Stainless Steel High Loop 3-Way Mixer Tap +$299.00 Premier Stainless Steel Matte Black 3-Way Mixer Tap (Long Reach) +$299.00 Stainless Steel 3 Way High Loop Matte Black Mixer Tap +$449.00

$229.00 – $249.00 inc. GST

SKU: IT007193-CTO Category:

Description

Specifications
  • Filter output up to 10,000 litres, for optimal performance we recommend replacing the filters every 6-12 months
  • 0.9 Micron absolute
  • Dimensions: 12 (W) x 32 (H) x 13(D)
  • Maximum flow rate: 2.5 litres per minute
  • Warranty: 5 years (housing)
CTO MAX Filter Cartridge

Coldstream CTO Max Replacement

The system requires the cartridge to be replaced every 6-12 months for optimal performance.

You want clean, safe water for your family—and the Coldstream CTO Max helps you get there. This all-in-one cartridge removes over 130 contaminants, including Fluoride, Chlorine, Chloramine, PFAS, heavy metals, bacteria, and viruses. With its advanced dual-layer design, it fits standard benchtop water filter & undersink water filters and delivers peace of mind with every glass. Certified to NSF standards and made in the UK, it’s your powerful ally in creating a healthier home through pure, great-tasting water.

Installation of your single undersink water filter system is straightforward with the included guide and complete package of parts. All necessary fittings, tubing, and adapters are provided for a seamless setup. 

We want to ensure your installation experience is easy and stress-free. Please reach out to our support team with any questions! 

Single Undersink Installation Instructions
Doulton Single Under Sink water filter Ultracarb diagram
Doulton Single Under Sink water filter Ultracarb component diagram

CTO Max Single Under Sink Water Filter Components

  • A – CTO Max Filter Cartridge
  • 1 – Housing Sump
  • 2 – Housing Cap
  • 3 – Stainless Steel Bracket
  • 4 – Pressure Limiting Valve (PLV)
  • 5 – John Guest Elbow (with red clips)

Certified Countertop Water Filtration

This system meets the WaterMark specification AS/NZS 3497:1998 Amdt 1 2001 Drinking water treatment unit – Plumbing requirements.
Certificate Number 23124.

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

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

Single Undersink Installation Guide
Drinking Water Faucet Installation Guide

Data Sheets & Test Reports

CTO Max Test Results

Additional information

Weight2 kg
Dimensions16 × 13 × 32 cm
Size

9 Inch, 10 Inch

4 reviews for CTO Max Single Under Sink Water Filter

  1. Harry P –

    Easy to install, excellent service and great product so far. If drinking water is a priority for you and family. I recommend this under bench system for its taste and affordability.

    Having one internal filter that does three jobs is Perfect and the taste wether warm or cold is exactly what I wanted.

    • Living Whole –

      Thanks for your great feedback, Harry!😊 We’re glad you’re enjoying the taste and convenience of your system. Just a tip—it’s best to use cold water with the filter for optimal performance.

  2. Katherine Hayward –

    Love this product. It arrived in good time. It was very easy to install – thank you to my son.
    The under sink filter system and tap fits well under the sink, is a quality product at an excellent price.
    Good flow speed on tap. It is slower than normal household tap, but no one has complained for having filtered water available.
    Loving filtered water.

    • Living Whole –

      Hi Katherine, thank you for your wonderful review! We’re happy you’re enjoying the filter system and finding it easy to use. Your satisfaction means a lot to us!

  3. Vy –

    We installed the single filter under sink Doulton system last week. The family loves it!
    Extremely impressed with its compactness, flow rate, and the competitive price and reliable communication of Living Whole.
    Proud to support this Aussie family business.

    • Living Whole –

      Hi Vy, thank you for your review! We’re glad your family loves the Doulton under sink water filter and we appreciate you supporting our business!

  4. Dianne –

    My order was slightly complex but the team were easily contactable and dealt with my needs with ease. Thanks – not everyone provides such helpful service these days! Delivery was timely and I was kept informed throughout. Product works as expected and easy to install!

    • Living Whole –

      Thank you for your feedback, Dianne! We’re glad everything went smoothly and that you’re happy with the service and product.🙂

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