CTO Max Twin Under Sink Water Filter – Double Chemical & Lead Guard

Concerned about lead from old pipes, chemicals or unwanted by-products in your drinking water? This twin undersink water filter combines two advanced carbon cartridges to help reduce lead, chlorine, VOCs and other chemical contaminants, giving you cleaner, fresher-tasting water straight from your tap.

  • UK-made CTO Max ceramic & carbon block filter to reduce fluoride, 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.
  • Certified to NSF/ANSI 53 & NSF/ANSI 42 standards.
  • 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.
  • Filter replacement costs: $169 every 6-12 months depending on usage and water quality

NSF Watermark certified

$519.00 inc GST

Choose Your Filter Options

Your under sink water filter includes everything you need to get it installed and deliver clean water with convenience.

(Optional) 3 Way Mixer Upgrade

Replaces existing mixer tap. No extra drilling required.
View taps.

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.

Customer Reviews

Replacement Filter Schedule

US manufactured Omnipure fluoride filter cartridges and the UK Manufactured CTO Max ceramic filter cartridge are made from NSF certified components.

Every 6-12 months

CTO Max Ceramic Filter 

$119.00

Every 6-12 months

Omnipure OMB934 Carbon Block 

$59.00

Every 6-12 months

Filter Set

$169.00

Under Sink Water Filter Installation

Specifications

  • Warranty: 5 years (housing)
  • Temperature Range: 5°C – 38°C
  • Dimensions: 23cm(W) x 34cm (H) x 13cm(D)
  • Cartridge sizes: 10″ x 2.5″
  • Filter life CTO Max: 6-12 months, or 10,000 litres
  • Filter life Omnipure OMB934: 6-12 months or 9,500 litres
  • 0.9 Micron absolute
  • Maximum flow rate: 2.5 litres per minute
2 stage under sink water filter dimensions diagram

Designed for quick, hassle-free setup. Any qualified plumber can easily install this system in 1 hour or less, barring any unusual under-sink complications. See the diagram below for how the lines connect to your chosen tap configuration.

Dedicated Tap

2 stage under sink water filter installation diagram dedicated filtered water tap

3 Way Mixer Tap

2 stage under sink water filter installation diagram 3 way mixer tap
2 stage under sink water filter installed kitchen

Ready to order?

Your under sink water filter comes with everything included and ready to be installed for immediate use.

Filtered Water Taps

Your system includes a dedicated filtered water tap. If you prefer to avoid drilling an extra hole, you can choose one of our 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.

Dedicated Filtered Water Taps

Enhance your kitchen with the ‘Retro’ – a sleek, standard filter faucet designed to pair perfectly with your under-sink water filtration system. 

125mm (W) x 235mm (H)

The Metro with High Loop Faucet with bright chrome finish is designed to pair perfectly with your under-sink water filtration system.

160mm (W) x 250mm (H)

Brushed chrome finish, this elegant fixture is designed to seamlessly integrate with your chosen under sink water filtration system. 

180mm (W) x 300mm (H)

The Euro with Long Reach Faucet with bright chrome finish is designed to pair perfectly with your under-sink water filtration system.

150mm (W) x 230mm (H)

3 Way Mixer Taps

Sleek and modern with a ong reach. It’s the perfect companion for your chosen under-sink water filtration system.

240mm (W) x 360mm (H)

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)

The Stainless Steel Premier 3-Way Mixer Tap features a matte black finish, providing hot, cold, and filtered water from a single tap.

210mm (W) x 290mm (H)

The Stainless Steel 3 Way High Loop Matte Black Mixer Tap features a high loop design in a matte black finish.

225mm (W) x 400mm (H)