Home Water Filtration Systems

An under-sink home water filtration system guarantees clean, safe drinking water, reduces plastic waste, and provides convenient access to great-tasting water right from your tap.

Personalised advice
Ongoing aftercare
Innovative products

Under the Sink Home Water Filtration Systems

Explore our range of water filtration products, designed to improve the water quality in your household.

Culligan Product
Culligan AC Slim RO
Reverse Osmosis system
Culligan pure ultrafiltration
Carbon block filter
Culligan Intense Click & Drink
Eliminates chlorine and bacteria
Wireless technology
For drinking and cooking
Culligan So Clear
No need for electricity
Multi-stage filtration process
Compact size fits most kitchens

Why choose a Culligan Water Filtration System?

Culligan incorporates advanced filtration and purification technologies to ensure your water is safe, clean, and great-tasting. Explore the benefits of choosing a Culligan water filtration system for your home.

Our water filtration systems remove potentially harmful contaminants, providing you and your family with safer and healthier drinking water for both drinking and cooking.

Not only do Culligan’s filtration systems make water safer, but they also enhance its taste and removes nasty odours.

You can enjoy the taste of pure water without any lingering unpleasant aftertaste, making staying hydrated more enjoyable for your family.


Enjoy the convenience of having clean, filtered water at your fingertips, ensuring that every drink and every meal prepared with it is of the highest quality.

By eliminating the need for bottled water, you not only save money but also contribute to environmental sustainability by significantly reducing the plastic waste generated by single-use plastic bottles.


Culligan has a long-standing reputation for providing high-quality water treatment solutions globally.

8 million+ homes globally use our cleaner drinking water. Our products are designed to meet rigorous industry standards and deliver dependable performance.


We offer a range of advanced filtration methods, including reverse osmosis and carbon filtration.

Reverse osmosis effectively eliminates even the smallest contaminants, ensuring your water is safe and pure. Carbon filtration systems eliminate chlorine and bacteria, enhancing the taste and quality of your water.

Our commitment to innovation guarantees that you’ll enjoy safe, clean, and great-tasting water at your convenience.


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How do Culligan water purifiers work?

Experience the efficiency of Culligan’s water purifiers, which utilise high-performance filtration systems powered by either activated carbon or reverse osmosis. These compact, discreet units fit beneath your kitchen sink or in an adjacent cupboard. They connect directly to your cold-water supply, ensuring that every drop is treated before it reaches your tap.

And with our Click & Drink technology, a wireless button placed on your sink’s edge allows you to easily switch between filtered and unfiltered water at the touch of a button. This innovation eliminates the need for constant refilling of plastic water bottles or filter jugs, delivering unparalleled convenience and environmentally responsible water consumption.

If you’d like to learn more, speak to one of our experts.

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Flexible purchasing options available

When you rent

  • Lower upfront costs compared to purchasing a water filtration system outright.
  • Includes installation, ensuring that your system is set up correctly and efficiently.
  • Maintenance, repairs, and replacements included for complete peace of mind.

When you buy

  • While the upfront cost may be higher than renting, you won't have ongoing rental payments.
  • Buying gives you full ownership and control of your new water system.
  • A permanently installed water filtration system can add value to your home.

Water filtration system service & maintenance

Experience hassle-free installation and upkeep of your new water filtration system with our team of expert engineers, offering nationwide coverage across the UK.

Mechanics keys


Trust our skilled technicians with years of experience in installing under-sink water filtration systems. We deliver a friendly and efficient service and can schedule installations to suit your needs.



We carry out meticulous sanitation to ensure flawless, trouble-free operation of your water system. Our proactive maintenance approach ensures consistent performance for your peace of mind.

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If you encounter any issues, reach out to our customer service team, and we’ll promptly address them by repairing or replacing your filtration system. Our comprehensive service ensures your home’s filtration remains in top working condition.

Frequently asked questions

How does an under-sink water filtration system work?

Culligan under-sink water filtration systems use either activated carbon or reverse osmosis membranes to remove impurities and contaminants from your tap water.

As water passes through these filters, they trap and reduce common pollutants, providing cleaner, better-tasting water directly from your tap.

What types of contaminants can an under-sink water filtration system remove?

These systems can effectively remove a wide range of contaminants, including chlorine, sediment, heavy metals (like lead and copper), bacteria, viruses, pesticides, and various chemicals.

The specific contaminants removed depend on the type of filter used in your system.

Get in touch with our experts to learn more.

Is professional installation required for under-sink water filtration systems?

Professional installation is recommended to ensure proper placement, leak-free connections, and optimal performance.

A professional installer can also help you choose the best location for your system. Culligan engineers have years of experience installing a wide range of water systems for homes.

Learn more about our service.

Is it possible to have both an under-sink water filtration system and a water softener?

Absolutely. These two systems serve distinct purposes within your home. While under-sink water filtration systems enhance the quality of your drinking water, water softeners effectively combat hard water issues like limescale buildup, water spots on dishes, and dry skin.

This dual setup allows you to address all aspects of your water quality, ensuring optimal results for cleaning, bathing, cooking, and drinking water.

Are under-sink water filters environmentally friendly?

If you’re searching for ways to have a more eco-conscious home, under-sink water filtration offers an excellent starting point.

By providing a virtually endless supply of filtered water at home, this approach reduces the reliance on disposable plastic water bottles.

Thanks to Culligan water solutions, it’s estimated that 40 billion plastic bottles are saved from ending up in global landfills each year.

Get in touch with our experts

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