Filtr8 Under Sink Water Filter
Removes up to 99% of lead, chlorine and microplastics from your tap water, so every glass and every cup of tea tastes the way it should. You fit it under your sink yourself, with no plumber and no drilling.
What it removes
What Filtr8 takes out of your water
Tap water can carry things you'd rather not have in your glass. Filtr8 removes up to 99% of these four.
Lead
Older homes can still have lead pipework, and traces of it can end up in your water.
Chlorine
The main cause of that swimming-pool taste and smell in tap water.
Chloramine
A longer-lasting disinfectant some water companies use instead of chlorine. It can leave a taste of its own.
Microplastics
Tiny plastic particles, caught by a carbon block with pores just 0.5 microns wide.
Choose your kit
Which kit is right for you?
Every kit comes with the same filter and everything you need to fit it. The difference is how many cartridges are in the box, and whether you'd like a new tap to go with it.
| Starter KitWas £89.99£68.98Save £21.01 | Drink More KitBought separately £118.97£98.98Save £19.99 | Professional KitBought separately £268.96£198.98Save £69.98 | |
|---|---|---|---|
| Best for | Trying Filtr8 for the first time | Getting two years sorted in one go | Upgrading your kitchen tap at the same time |
| You save | £21.01, down from £89.99 | £19.99 compared with £118.97 bought separately | £69.98 compared with £268.96 bought separately |
| Filtered water for | 12 months | 24 months | 24 months |
| Tap | Works with the tap you already have | Works with the tap you already have | Stainless steel 3-way tap included |
| What's in the box | 1 x Under Sink Water Filter Head 1 x Water Filter Cartridge 2 x Flexible Hoses Fixings & Fixtures Installation Guide | 1 x Under Sink Water Filter Head 2 x Water Filter Cartridges 2 x Flexible Hoses Fixings & Fixtures Installation Guide | 1 x Three-Way Filter Tap 1 x Under Sink Water Filter Head 2 x Water Filter Cartridges 2 x Flexible Hoses Fixings & Fixtures Installation Guide |
Before you buy
Will it fit under your sink?
If you have a standard cupboard under your kitchen sink, almost certainly. Here's what to check.

Installation
Fit it yourself, no plumber needed
No plumber and no drilling. Everything you need is in the box, along with a step-by-step guide.
- 01Turn off the waterShut off the cold water supply to your kitchen tap.
- 02Attach the inlet hoseConnect the inlet hose to your cold water supply.
- 03Connect the filterBoth hoses screw onto the top of the filter, and the inlet is clearly marked.
- 04Turn the water back onRun the tap to flush the new cartridge through, then pour yourself a glass.
Changing the cartridge is even quicker. Twist the old one out and the new one in. It takes about 30 seconds and needs no tools.
Going for the Professional kit? The filter fits the same way. We recommend a plumber for the 3-way tap, though it's a straightforward swap if you're handy.
“Literally took me 10 minutes to fit, not bad for my first ever plumbing job.”




The proof
Tested. Read the results yourself.
Customer reviews
What people say after fitting it
"Arrived quickly and good quality. I've been having issues with our water as I'm pregnant and for me it tastes really bad. Husband fitted this to our kitchen tap and it actually tastes and feel so much better."
"Literally took me 10 minutes to fit, not bad for my first ever plumbing job. Water tastes way better even my 10 year old son noticed a difference."
"Fast Delivery. Easy to install, great quality, and the water tastes much better. Highly recommend."
"Great Product, installation was simple and straightforward, and the difference in water taste is noticeable - much fresher and cleaner. Really pleased and would definitely recommend."
Questions
Good to know before you order
Can you help me fit it?+
Yes. Our team gives free advice on fitting your filter. Get in touch and we'll reply within 24 hours.
How often does the cartridge need changing?+
About once a year. Swapping it takes around 30 seconds and needs no tools. You twist the old cartridge out and the new one in. Replacement cartridges are here.
Will it slow down my tap?+
Filtr8 is designed with a high flow rate, so you won't be left waiting at the sink.
Has Filtr8 been tested?+
Yes. Filtr8 publishes its test results in full, and the filter is made with NSF/ANSI certified materials. Read the results.
How much is delivery, and how long does it take?+
UK delivery is free. We send every order by Royal Mail Tracked 24, and it usually arrives within 2 to 3 working days.
Do you deliver outside the UK?+
Not at the moment. We currently deliver to UK addresses only.
What if I change my mind?+
Send it back, no questions asked. Fit it, try it, and if you don't like it, return it within 30 days of delivery for a refund. Return postage is at your cost unless something arrived damaged.







