Customers in Canada can purchase Doulton & British Berkefeld products from our official Canada distributor Canada Water Filter

Under Sink Water Filter system tap reccomendations

Under Sink Water Filter system dimensions

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Doulton® Kingfisher™ Under Sink Water Filter System with Biotect® Ultra

SKU:W9330300

Doulton's hero water filter!
Easy installation
Effortless to maintain

Free delivery over £25
14 day returns
Made in Britain

SKU: W9330300

Introducing our hero under sink water filter system – the Doulton Kingfisher! Designed to sit at the heart of your home in the kitchen, allowing the whole family to enjoy filtered water straight from your kitchen tap, the Doulton Kingfisher is the perfect solution for continuous peace of mind.

Designed for convenience to allow quick filter changes and provide high performance in a discreet installation, this system fits neatly under your sink and is recommended for use with the  Doulton Pillar Tap  or integrated with the  Doulton Three Way Mixer Tap  (each sold separately). The tap has been designed to maintain the best possible water pressure when used in conjunction with the Doulton Kingfisher system and our Biotect® Ultra ceramic water filter.

The Doulton Kingfisher system comes, as standard, with our independently certified  Biotect® Ultra Filter.

This provides powerful protection by reducing up to 99.99% of common contaminants, including the following in varying levels, which can be viewed on our performance claims table here:

Bacteria and cysts (including Giardia and Cryptosporidium)
Common insecticides and herbicides
Microplastics
Heavy metals such as: lead, cadmium and mercury
Chlorine and monochloramine

Whether you’re a confident DIYer or prefer to call in a professional, installation is quick and hassle-free. Typically completed in under an hour, the box comes with full instructions and an installation kit  is also included at checkout – for free!

Changing your filter is also effortless and can easily be done yourself when required.

All of the claims for the Doulton Kingfisher System with Biotect® Ultra Filter are certified or independently tested to a range of NSF/ANSI standard protocols.

Please note: We strongly recommend using a Doulton 3-way Tap or Pillar Tap with your Doulton under sink system. Our taps have been designed to be compatible with our systems and retain the best water pressure possible. Whilst the system may be fitted using an alternative or existing tap directly, alternate fittings and connectors may be required to adapt to your chosen tap, and the flow rate will be limited to a maximum flow rate of 1.9L/minute (the flow rate of the Biotect Ultra filter).

Refer to our FAQs section for more information.

Width	Depth	Height
107.7 mm	361.1 mm	110.5 mm

CRITICAL PERFORMANCE WARNING

PLEASE NOTE: This system is designed for use only with the Biotect Ultra and Biotect Ultra SI filter cartridges. For more targeted contaminant reduction please explore our Doulton DUO or TRIO under sink water filter systems.

Compatible with

Not Compatible With

British Berkefeld® Ultra Sterasyl® (8674)

Doulton® Limescale Reduction Cartridge (9A04) for DUO & TRIO systems

Doulton® PFAS Chlorine Reduction Cartridge (9H04) for DUO & TRIO Systems

Doulton® Nitrate Reduction Cartridge (9F04) for DUO & TRIO systems

Doulton® Sediment Reduction Cartridge (9E04) for DUO & TRIO systems

Doulton® Fluoride Reduction Cartridge (9B04) for DUO & TRIO systems

Doulton Kingfisher Under Sink Water Filter System

1 x Doulton Biotect Ultra (2501) Filter

1 x Doulton Undercounter Installation Kit

Technical Documentation

Download instructions and test reports.

Product Instructions

Doulton Kingfisher Product Instructions

Filter Elements Operating and Changing Instructions

Doulton Filter Elements Operating and Changing Instructions

How-To Video Gallery

Watch tutorials for setup and maintenance.

Doulton Water Filters EcoFast Under Sink Water Filter System

How Do You Install a Doulton Under Sink Water Filter System?

Free shipping is available on orders over £25/€25.

Next working day delivery is available for orders placed by 11:00 (Monday to Friday), subject to the destination and courier availability. Orders placed after this time will be processed on the next working day.

Additional details and options specific to your country will be provided at checkout.

Advanced Filtration Technology

Eco-Conscious Hydration

Doulton® Kingfisher™ Under Sink Water Filter System with Biotect® Ultra

Doulton® Kingfisher™ Under Sink Water Filter System with Biotect® Ultra