Providing Clean, Safe, Affordable
Drinking Water since 2013

High performance, affordable

Ceramic Water Filters & Purifiers

At Coldstream we research, develop and manufacture a range of high performance yet affordable ceramic water filters and purifiers. 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 to sleek countertop systems, to systems that are hidden under your kitchen sink. They are simple to install and you can view our installation videos here. All our systems include an automatic product warranty validated on purchase.

Changing your filter, by the way, is so intuitive you won’t even need instructions. We recommend changing your filter every 90 days.

MAX Undercounter Water Purifier

  • Launched in May 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

Coldstream CERAMIC Filters and Purifiers Remove






Heavy Metals

Pesticides & Herbicides


Essential salts and electrolytes are maintained

women holding glass of water

Our Vision

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.

women holding glass of water

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.

women drinking water near faucet
child looking with magnifying glass in the glass

Performance-Driven Filters and Solutions

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.

Keeping Water Healthy

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

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.