Doulton® HIP TRIO Under Sink Water Filter System with Biotect Ultra®

• Undercounter Trio Water Filter System
• Biotect Ultra® Ceramic Water Filter Cartridge
• Full Installation Kit
• Selected Second Filter Cartridge
• Selected Third Filter Cartridge
• The option to add a Pillar or 3-way mixer tap

Is the Doulton HIP TRIO Independently tested?

The HIP TRIO system is tested and certified by WRAS & by NSF International against NSF/ANSI Standard 372 (US low lead requirements).

The Biotect Ultra Filter itself is tested to the following NSF standards in the EcoFast Biotect Ultra Inline System:

• NSF/ANSI Standard 42 – Material Safety, class 1 particulate and chlorine reduction
• NSF/ANSI Standard 53 – Turbidity, and lead reduction
• NSF/ANSI Standard 401 – Microplastic reduction
• NSF/ANSI Standard 372 – Lead-free compliance

You can view all of our test data by clicking here.

Where can I find the instructions for installing and
maintaining my Doulton filter system?

There will be installation details in the box, but if you
would like to take a look online, you can find them by clicking here: Installation Instructions

How often do I need to replace my filter?

We recommend changing the Biotech Ultra filter at around 6 months. This depends on water usage, though. For the cartridges we recommend changing them a little more frequently, at around 3 months for the most effective protection.

Is there anything else I need to consider?

We would recommend performing a flow  test on your
existing drinking water supply to check that the pressure of your water supply is sufficient for the system to run effectively. This is a simple test you can
do yourself at home with a jug and a timer!

Steps to check water pressure:    

• Place the jug under your kitchen tap.      
• Turn the cold tap on fully.     
• Start the timer as soon as water begins to flow.     
• Stop the timer when the jug reaches exactly 1litre.
• Check how long it took.

If it took under 6 seconds, you likely have very high pressure (> 10 L/min), which is excellent for Doulton Water Filter Systems but may need to install a pressure reducer.

If it took 7 - 12 seconds, you likely have a medium to low water pressure which should be adequate to run the system.

If it took anything over 12 seconds, we would not recommend using a Doulton Under Sink Water Filter system without seeking advice on your mains water pressure - ideally you need 30 psi/ 2 bar.

However, you may want to explore our British Berkefeld range for an option that requires no plumbing!

Do you have a UK customer service team I can contact for help?

Of course we do! Please email filtersales@doulton.com for any help or advice. Alternatively, please call 0333 340 3600.