We offer free shipping on all UK orders For USA orders also with free shipping please visit; www.coldstreamfilters.us
Counter top water filterCountertop filter systems
Undercounter filter systems
Replacement filters
Accessories and spares

We currently have a huge interest in Coldstream Filters product range and are unable to supply any new orders for our Coldstream MAX systems and filters. We would suggest considering the Coldstream CTO+ range which we can supply and provides a similar performance but with no blue exterior replacement indicator. For any questions, you can contact us via email at: website@kltfiltration.com . Thank you for your interest in Coldstream and apologies for any inconvenience.

At Coldstream Filters we research, develop and manufacture a range of high performance yet affordable ceramic water filters and purifiers. Manufactured in the UK since 2013 we have sold millions of our filters all around the world helping to deliver healthy, safe and great tasting drinking water straight from your tap; whatever the condition of the water supply system and infrastructure.

Our ceramic filters fit a range of filter systems from Gravity units, (E.g. Berkey, British Berkefeld, Phoenix and Newton), countertop systems, to systems that are unobtrusive and hidden under your kitchen sink. They are simple to install and you can view information at the following link on what our filters remove to ensure clean and trusted drinking water: Performance datasheets - Coldstream UK (coldstreamfilters.com)

All our systems and filters are made in the UK. When purchasing a system the first filter is included, and an automatic product warranty validated on purchase.

We manufacture an extensive range of affordable water purification products, designed to fit our own range of both above/countertop and below/under sink models. Our filters may fit other ranges of pressure and Gravity housings and you can check with us prior to purchase here: Contact - Coldstream UK (coldstreamfilters.com) Our systems and filters can be used to ensure great tasting water, but also for trusted clean water when there are concerns around potential contaminants present in the mains water supply or from an independent ground water source.

Our undercounter systems are increasingly installed in new kitchens and house renovations; whilst our countertop system is purchased by those wanting an immediate solution, (15 minute set-up) including renters & tenants but also importantly in emergency situations, e.g. flood situations affecting mains water. To review our product range please click here: Water Filter Systems | Coldstream — COLDSTREAM (coldstreamfilters.com)

Under sink/Undercounter systems.  Water filtration system. Coldstream ceramic water filters for kitchen tap.
Undercounter Systems
Countertop ceramic water filtration system, connect straight to your sink tap. Coldstream ceramic water filters for kitchen tap.
Countertop Systems
Ceramic water filters for your under sink, countertop and gravity housings.  Connect to your kitchen tap.
Replacement Filters

MAX Undercounter Water Purifier

  • Launched in 2022 to enable access to clean and great tasting drinking water
  • Healthy salts and electrolytes remain in the water
  • Filter replacement indicator on ceramic filter
  • No power required
  • PFAS and micro-plastics
  • Review our film to ensure hassle free installation
  • Ideal for kitchen lead pipes to remove heavy metals
  • One of the best value systems on the market
  • Automatic warranty included on purchase






Heavy Metals

Pesticides & Herbicides


but essential salts and electrolytes are maintained

Under sink/Undercounter systems.  Water filtration system.

Providing Clean, Safe Drinking Water

We make the very highest standard of drinking water filtration systems and purifiers, capable of providing the cleanest, safest drinking water straight from the tap.

Coldstream filters and purifiers are made at our state-of-the-art UK manufacturing facility using our unique ceramic injection moulding technology. Our business is environmentally powered by energy generated from wind power and solar panels.

We remove pollution, we don’t create it.

Coldstream Water Filtration Solutions

Coldstream water filtration systems are available in a range of styles and sizes to suit most common household situations and requirements. Our countertop models can be installed and working in minutes connecting directly to your kitchen tap, while our undercounter/ under sink model fits conveniently and discreetly out of sight. Our FTO+ filter can be used in the leading Gravity filter systems.

Our Max Purifier, CTO Plus and Sentry water filters fit into all our models
(and most other leading manufacturers too). In comparison with other filters, Coldstream test results show that our products are effective at removing the widest range of contaminants found in water supplies, anywhere in the world and even outperform many reverse osmosis systems. Our Coldstream Max filter remains our highest performing filters also removing PFAS.

Which filter is right for me?


To empower people to permanently remove contamination from the world’s water supply, with affordable drinking water filter systems which are harmless to the environment.

Healthy water contains
essential salts and electrolytes.
It’s important to keep these in your water whilst removing harmful or
bad tasting contaminants.


A Cost Effective Solution

Coldstream filtration systems are cost-effective, require no power, filter 100% of water used and only leave behind essential salts and electrolytes.

So if you are thinking of installing a water filtration system or already have one installed, choose Coldstream ceramic filters and purifiers.

Zero-carbon Manufacturing

Our ceramic filtration units are environmentally friendly and benefit from an exceptionally low carbon footprint. Our factory is powered entirely by green energy, making use of our own solar farm and wind turbine. We constantly strive to make our manufacturing techniques as energy efficient as possible.

Scientific Testing & Verification

To ensure our products meet the highest standards, stringent testing and quality control procedures are followed throughout the manufacturing process.

Performance is regularly tested and verified to the applicable standards for point-of-use drinking water filters and purifiers by an independent, third-party test laboratory, where effluent water is tested to guarantee that all contaminants have been removed.

For a detailed breakdown of our testing procedures, please see our performance data sheets for the FTO+ Gravity ceramic water filter, Sentry ceramic water filter, CTO Plus ceramic water filter and the Max ceramic water filter.


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