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"Absolutely outstanding service. These folks really do know how to do an amazing job. I honestly am so delighted with everything they have done. The kit is superb, water tastes wonderful. They always send the filters quickly and have answered many questions I had when fitting the system and the replacement filters. I highly recommend them. Such lovely staff, always so helpful and easy to contact when you need advice. So very glad I went with them and so grateful to them for such a high quality service. 🤩 great work 🤩"
Kelly - June 2025
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Let us help pick the best filter for your needs, ring us on 020 8761 6611 or email us. Alternatively, have you tried our quiz? You will find the right filter in under 30 seconds. Try the Quiz
Product Description
Replacement Water Filter Cartridges
Our top quality "Master Purifier" Universal cartridge can be fitted to many other makes of water filters, including:
Brands like: Cuno... Ametek ... Liff ... Plymouth ... Bruner ... Noga... Pentek... Homebase... Screwfix... and many Other brands including reverse osmosis pre filters.
This top quality filter will replace any cartridge types that are 9 and three quarter inches length x 3 inches or less diameter. With a 1 inch aperture at either end.
If your existing filter looks anything like this it can probably be replaced by our specially made cartridge. See why below.
"Delighted with the service received when we ordered this product for the first time. Could not believe the price which was about 1/3rd what we had been paying. Delivered quickly and fitted easily." Independent Review by Lizann
Your new filter will restore the water to its fresh natural state, improving the taste of your drinks and cooking.
Why These Carbon Filters Can Be Inter-Changed
Firstly: in the bad old days water filters would come in all shapes and sizes. The aim was to force customers to return to particular manufacturers.
However in recent years there has been a growing move to standardise the sizes of filter cartridges.
Now about 80% of all cartridges are the "universal ten inch size".
(Note: Why they are called "ten inch" is a mystery as they are actually 9 and three quarter inches high!)
Secondly: the great majority of water filters are made from carbon.
And the great majority of carbon filters basically consist of burnt coconut shell.
It is a question of exactly how it is moulded into the required filter shape during the filter manufacturing process.
For example, the carbon might be cut into grains and placed inside a hard cartridge case (Granular Activated Carbon / AC).
Or they might be compressed into Carbon Block and typically be surrounded by a mesh - as is the case with our specially made "10 inch" types - see above images.
While Carbon Block is now generally seen as being a superior method of filtration over GAC, they basically do the same job.
The point is that as long as the size of the cartridge is correct, one type can be changed for the other.
"All good, arrived very quickly, as described and as ordered. Fits perfectly. Very happy with the service." Independent Review by Austin
"I cannot rate this company highly enough. Their product is fabulous... Their service and customer care is beyond price. Yes, I know I sound like an advert, but hand on heart, they are lovely people to deal with. I would recommend them very highly." Independent Review by Ann Wellstead
Micron Size of the Water Filters
The other thing to look for in any water filter is what micron size the cartridge filters down to.
A micron is a millionth of a meter, so 100 microns is a tenth of a millimetre.
A human hair is about 75 microns in diameter.
Our filter cartridge is a top quality carbon block cartridge that filters down to 5 microns.
Five micron cartridges are the standard size for good quality domestic water filters.
It is very likely that your existing cartridge is 5 microns - assuming it is not there to filter out something very specific.
The next size down from 5 is 1 micron This is fairly unusual so if you know that your filter is 1 micron you would need to check if there is any specific reason for that.
It might be that it simply sounded good at the time to whoever bought the filter. Volume 11 must be better than volume 10, and all that...
But perhaps it is supposed to stop a specific contaminant like bacteria.
Now the best way to filter out bacteria is using filtration methods such as Reverse Osmosis or a combination of approaches - so 1 micron is not necessarily the best solution for that anyway.
The best way to determine if the standard 5 micron filter is right for you is to check on the following:
Do you have a private water supply? If you aren't on the normal mains / municipal supply then you might need special filtration - and even a 1 micron carbon cartridge might not be the best thing. (Click here to see solutions to specific drinking water problems).
Do you have another special water supply situation / needs - for example you might have lead pipes… or a special health condition?
If so, unless you are looking to replace reverse osmosis 10 inch pre filters (if so, good: we can help you. our "ten inch" filters will do the job) - this might be a good time to review what the best water filter solution would be for you.
To check whether our standard cartridge is suitable for your water filter you need to check the size.
Our standard filters measure as follows:
They are 9 and 3/4 inches (248mm) high.
This height includes the rubber seals at both ends.
They have a 1 inch hole at either end, in the middle, to slot into the housing unit.
Their diameter is approx 66mm. However they can replace cartridges with similar diameters. The main thing is to make sure that the height is correct and they have a 1 inch hole at either end, in the middle, to slot into the housing unit.
"Having searched all our local shops and building centres to find a replacement filter to no avail we then looked on the internet. This is where we found 'UK Water Filters Ltd'. Their site was easy to read and after a very short time we found they had the filter we needed. Having ordered and paid on-line the filter was delivered in 25 Hrs. Fitting the replacement was very easy ... We would certainly recommend this supplier. Well done 'UK Water Filters Ltd." Independent Review by Barry Frizzell
ORDER ANYTIME Day or Night 24/7 for NEXT DAY DELIVERY
Our top quality "Master Purifier" Universal cartridge can be fitted to many other makes of water filters, including:
Brands like: Cuno... Ametek ... Liff ... Plymouth ... Bruner ... Noga... Pentek... Homebase... Screwfix... and many Other brands including reverse osmosis pre filters.
This top quality filter will replace any cartridge types that are 9 and three quarter inches length x 3 inches or less diameter. With a 1 inch aperture at either end.
If your existing filter looks anything like this it can probably be replaced by our specially made cartridge. See why below.
"Delighted with the service received when we ordered this product for the first time. Could not believe the price which was about 1/3rd what we had been paying. Delivered quickly and fitted easily." Independent Review by Lizann
Your new filter will restore the water to its fresh natural state, improving the taste of your drinks and cooking.
Why These Carbon Filters Can Be Inter-Changed
Firstly: in the bad old days water filters would come in all shapes and sizes. The aim was to force customers to return to particular manufacturers.
However in recent years there has been a growing move to standardise the sizes of filter cartridges.
Now about 80% of all cartridges are the "universal ten inch size".
(Note: Why they are called "ten inch" is a mystery as they are actually 9 and three quarter inches high!)
Secondly: the great majority of water filters are made from carbon.
And the great majority of carbon filters basically consist of burnt coconut shell.
It is a question of exactly how it is moulded into the required filter shape during the filter manufacturing process.
For example, the carbon might be cut into grains and placed inside a hard cartridge case (Granular Activated Carbon / AC).
Or they might be compressed into Carbon Block and typically be surrounded by a mesh - as is the case with our specially made "10 inch" types - see above images.
While Carbon Block is now generally seen as being a superior method of filtration over GAC, they basically do the same job.
The point is that as long as the size of the cartridge is correct, one type can be changed for the other.
"All good, arrived very quickly, as described and as ordered. Fits perfectly. Very happy with the service." Independent Review by Austin
"I cannot rate this company highly enough. Their product is fabulous... Their service and customer care is beyond price. Yes, I know I sound like an advert, but hand on heart, they are lovely people to deal with. I would recommend them very highly." Independent Review by Ann Wellstead
Micron Size of the Water Filters
The other thing to look for in any water filter is what micron size the cartridge filters down to.
A micron is a millionth of a meter, so 100 microns is a tenth of a millimetre.
A human hair is about 75 microns in diameter.
Our filter cartridge is a top quality carbon block cartridge that filters down to 5 microns.
Five micron cartridges are the standard size for good quality domestic water filters.
It is very likely that your existing cartridge is 5 microns - assuming it is not there to filter out something very specific.
The next size down from 5 is 1 micron This is fairly unusual so if you know that your filter is 1 micron you would need to check if there is any specific reason for that.
It might be that it simply sounded good at the time to whoever bought the filter. Volume 11 must be better than volume 10, and all that...
But perhaps it is supposed to stop a specific contaminant like bacteria.
Now the best way to filter out bacteria is using filtration methods such as Reverse Osmosis or a combination of approaches - so 1 micron is not necessarily the best solution for that anyway.
The best way to determine if the standard 5 micron filter is right for you is to check on the following:
Do you have a private water supply? If you aren't on the normal mains / municipal supply then you might need special filtration - and even a 1 micron carbon cartridge might not be the best thing. (Click here to see solutions to specific drinking water problems).
Do you have another special water supply situation / needs - for example you might have lead pipes… or a special health condition?
If so, unless you are looking to replace reverse osmosis 10 inch pre filters (if so, good: we can help you. our "ten inch" filters will do the job) - this might be a good time to review what the best water filter solution would be for you.
To check whether our standard cartridge is suitable for your water filter you need to check the size.
Our standard filters measure as follows:
They are 9 and 3/4 inches (248mm) high.
This height includes the rubber seals at both ends.
They have a 1 inch hole at either end, in the middle, to slot into the housing unit.
Their diameter is approx 66mm. However they can replace cartridges with similar diameters. The main thing is to make sure that the height is correct and they have a 1 inch hole at either end, in the middle, to slot into the housing unit.
"Having searched all our local shops and building centres to find a replacement filter to no avail we then looked on the internet. This is where we found 'UK Water Filters Ltd'. Their site was easy to read and after a very short time we found they had the filter we needed. Having ordered and paid on-line the filter was delivered in 25 Hrs. Fitting the replacement was very easy ... We would certainly recommend this supplier. Well done 'UK Water Filters Ltd." Independent Review by Barry Frizzell
ORDER ANYTIME Day or Night 24/7 for NEXT DAY DELIVERY
This height includes the rubber seals at both ends. They have a 1 inch hole at either end, in the middle, to slot into the housing unit.
Their diameter is approx 66mm. However, they can replace cartridges with similar diameters. The main thing is to make sure that the height is correct and they have a 1 inch hole at either end, in the middle, to slot into the housing unit.
Like all water filters, you need to change this cartridge at regular intervals
Lifespan: 6 months
Cost per unit: £15.95
Equals cost per week: £0.66
Other Brands / Equivalent Codes
This top quality coconut shell 5 micron carbon block cartridge is a suitable replacement for other makes such as the Watts F109009 and other brands
This is a very high quality water filter so can replace any other "taste and odour" cartridge with the same dimensions.
"I am more than pleased with the filter. Considerably cheaper than the one that came with the taps. So easy to fit and only has to be replaced every six months."Independent Review by Judith Reant
Our Product Code
USC2000 / USC 2000 / USC-2000 (sometimes mis-remembered as USC1000)
ORDER ANYTIME Day or Night 24/7 for NEXT DAY DELIVERY
... and our Money Back Guarantee should help reassure you that we are an honest firm who will give you a first class, long term service.
How to get help
Call our help line on 020 8761 6611 at any time during UK office hours ie 9 am to 6 pm
Or email us for a rapid response.
Our policy is always to get back to you within an hour - or one working day at most.
Returns
In addition to your 3 Year Warranty, if for any reason you change your mind about your purchase within 90 days of receiving the goods, you can return your product for a full and complete refund *
PLUS we will pay for your return postage(UK only)
*This applies to individuals/ consumers using the products in domestic settings. Businesses please see our terms and conditions
Delivery Times
Order before 3 pm on any working day and we guarantee your order will be sent out the same day (not on weekends)
(To be honest we often manage to send them even after 3pm. But we can't promise that).
All prices on the website include delivery charges and VAT except where stated otherwise.
Delivery Charges
Your Standard "Free Delivery Included" is Second Class
This usually takes between 3 to 5 working days ie does not count weekends or Bank Holidays
Pay Extra for First Class
You also have the option at checkout to pay extra for First Class.
This should result in next day working delivery to mainland UK.
BUT please note while 95% do arrive next day this is not guaranteed.
However arrival within two working days is almost certain.
You can see your delivery costs at the checkout stage before you buy.
We are a family run business who value our customers. We've been trading for over twenty five years. So we won't be "here today gone tomorrow". Your Money Back Guarantees and Warranties will be safe.
Fully Accredited
Members of Safebuy the leading Consumer Assurance Scheme for online retailers approved under the Trading Standards Institute's Consumer Codes Approval Scheme.
Repeat Customers
Many of our clients have been buying filters from us for several years. Over 95% keep coming back to renew their filter because we offer a friendly, helpful service and great value prices. Checkout our TrustPilot reviews.
We’re Trustworthy
We have a huge number of great independent testimonials. For example on the Approved Consumer Code Directory for the Trading Standards Institute and on Google Certified Shops.
Such an improvement over unfiltered water. Losing microplastics, scale, chlorine and all the other nasties that can work their way in is just a bit of piece of mind for me in relation to my kids.
– Nick Love
I've had the filter installed for 1 month now and the water tastes loads better and no more smell of chemicals, just clean fresh filtered water I'd say it's the best water I've ever had.
– Neil Bradfield
“My filter fits easy and I am happy. We weigh the old filter when it is removed, filled with gunge which never got into our bodies with this filter. It’s quite frightening. My filter is worth every penny!
– Kathleen Gibson
Such an improvement over unfiltered water. Losing microplastics, scale, chlorine and all the other nasties that can work their way in is just a bit of piece of mind for me in relation to my kids.
– Nick Love
I've had the filter installed for 1 month now and the water tastes loads better and no more smell of chemicals, just clean fresh filtered water I'd say it's the best water I've ever had.
– Neil Bradfield
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