10 Best Water Filters in The UK

Last updated on 25/06/2025

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PH001 3-Pack Alkaline Water Filter Cartridges – Replacement Cartridge for Invigorated Water Jug – Water Purifier, Filtration System for Pure Drinking Water – 1.136 Liters Capacity

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Why We Love It

Long-lasting, cost-effective filter.
Advanced alkaline water purification.
Promotes sustainable living.

Main Highlights

LONG-LASTING FILTER: Our PH001 alkaline water filter can process up to 360 liters of waterand helps you replace plastic water bottles. A greener, cost-effective choice for purified water.
ADVANCED ALKALINE WATER FILTER: Our multi-stage filtration process filters harmful substances out, while essential minerals are retained. It amplifies alkalinity up to pH 9.
PURE, REFRESHING WATER: Our water filter alkaline system delivers a fresh & rejuvenating water taste, ensuring your loved ones have access to clean, clear, and healthy water!
A SUSTAINABLE SOLUTION: Decrease your reliance on plastic bottled water and protect our Earth! Our alkaline water filters are made from BPA-free, food-grade materials.
INVIGORATE YOUR LIFESTYLE: Combine our alkaline water filter cartridges with products like the pH Recharge countertop pitcher. Our product range offers a money-back guarantee.

Waterdrop Water Filter Cartridges, Replacement for Brita® Maxtra+® Plus, Maxtra Pro® All-in-1, Compatible with Brita® Marella® Jug, Brita® Kettle, Reduce PFAS, PFOA/PFOS, TÜV SÜD, NSF Certified (12)

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Why We Love It

Certified for contaminant reduction.
Promotes clean, great-tasting water.
Monthly refreshment recommended.

Main Highlights

Certified by NSF: Our filter is NSF 372 certified for lead-free material. It has been tested and certified against NSF 42 to reduce chlorine, bad taste and odor.
Clean and Great Tasting: The premium ion-exchange resin and granular activated carbon used are effective in reducing chlorine, taste, odor, heavy metals and other potentially harmful contaminants in water to improve water quality and deliver fresh water, tested by a third lab.
1 Month Refreshment: For best results and continuous refreshment, it's recommended to replace your filter every month, which will vary based on your water quality.
Replacement Model: Replacement for Brita Maxtra+, replacement for Brita water filter jugs, Marella, Style, Elemaris XL, Aluna, Mavea Elemaris System. Also compatible with Amazon Basics, Philips, Dafi, and Aquaphor pitchers. Not suitable for Waterdrop, Aqua Optima, Laica.
NOTE: Please do not throw away the small blue valve in the package after receiving the goods, and read the valve installation steps and instructions carefully so that it can work better with your water filter jug!

BRITA S1330 MAXTRA+ water filter cartridges, compatible with all jugs for chlorine and limescale reduction, 12 pack

15% Off

Why We Love It

Universal compatibility with all BRITA jugs.
Enhances taste by reducing impurities.
Eco-friendly and cost-effective solution.

Main Highlights

Compatible with all BRITA jugs including those with 'PerfectFit' feature (Aluna, Marella, Style)
Micro Carbon Pearls reduce chlorine and impurities for improved taste and appearance of food and drinks.
Ion Exchange Pearls permanently absorb lead and copper and reduce limescale, for appliance protection
Recommended by the UK Tea Academy and by consumers - 96 percent agree tea is more brilliant with MAXTRA+ filtered water
Fresh great tasting water, without the waste of bottled water for just a few pence per litre
MAXTRA+ filter cartridges last approximately 4 weeks and are recyclable

iSpring RCC7AK 6 Stage Reverse Osmosis Water System Under Sink with Alkaline Remineralization, NSF Certified, 75 GPD, TDS Reduction

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Why We Love It

Restores natural water alkalinity.
Easy visual maintenance.
Hassle-free DIY installation.

Main Highlights

【Certified to NSF/ANSI 58】: 6-Stage Alkaline Remineralization Layered Filtration - Exclusively designed to restore the natural alkalinity and mineral balance of water; this reliable and ultra-safe Reverse Osmosis (RO) water filtration system converts your water into clean, pure and healthy drinking water by removing up to 99% of over 1,000 harmful contaminants like chlorine, fluoride, lead (removes up to 98%), arsenic, asbestos, calcium, sodium and more.
【GREAT-TASTING MINERAL WATER】：A standard 5 stage RO system produces slightly acidic water with a pH of 7. 0 or below because the RO membrane removes not only harmful pollutants but also a few helpful minerals. The iSpring RCC7AK Reverse Osmosis water filter includes an additional 6th stage - an Alkaline Remineralization filter which restores healthy minerals and produces a balanced alkalinity, which gives your water a more natural taste than regular 5 stage RO water filter.
【LOW MAINTENANCE】：Transparent 1st stage housing for easy visual inspection. Three extra long life pre-filters to remove large contaminants and protect RO membrane. Ultra fine (RO) filter to remove contaminants down to 0. 0001 microns; fine GAC filter to provide final polishing to the purified water and (AK) filter to finally restore just the right proportion of healthy minerals and a natural alkaline balance. The end result is great-tasting bottled-water quality.
【EASY TO INSTALL & NO LEAKS】: The water purifier is designed for do-it-yourself installation and all necessary parts for installation are included. Backed by clear installation manual, instructional videos, and access to life-time technical support. The entire alkaline water filter fits nicely under a kitchen sink. For leak-free installation, simply push tubing ½ inch deep into quick-fitting connectors and lock; no threading pipes needed.
【100% SATISFIED CUSTOMERS】: RCC7AK from America’s favorite brand of under sink water filter is the highly rated reverse osmosis systems. Comes with 1-year limited manufacturer warranty upon registration and lifetime personalized support from GA, USA, combined with premium quality components, this water filter is to deliver endless bottled quality drinking water right in your home for many years to come, eliminating plastic waste.

BRITA S1326 MAXTRA+ water filter cartridges, compatible with all jugs for chlorine and limescale reduction, 6 pack

20% OffFree Shipping

Why We Love It

Enhances taste, reduces impurities.
Protects appliances from limescale.
Eco-friendly and cost-efficient.

Main Highlights

Compatible with all BRITA jugs including those with 'PerfectFit' feature (Aluna, Marella, Style)
Micro Carbon Pearls reduce chlorine and impurities for improved taste and appearance of food and drinks.
Ion Exchange Pearls permanently absorb lead and copper and reduce limescale, for appliance protection
Recommended by the UK Tea Academy and by consumers - 96% agree tea is more brilliant with MAXTRA+ filtered water
Fresh great tasting water, without the waste of bottled water for just a few pence per litre
MAXTRA+ filter cartridges last approximately 4 weeks and are recyclable

BRITA Flow XXL Water Filter Tank (8.2L) incl. 1x MAXTRA PRO All-in-1 cartridge - fridge-fitting dispenser for families and offices - now in sustainable Smart Box ( branding slightly different)

40% OffFree Shipping

Why We Love It

Convenient, family-friendly design.
Advanced 4-stage filtration.
Environmentally sustainable choice.

Main Highlights

Perfect for fridge shelf or countertops with convenient tap and sliding lid for easy refilling and cleaning (BPA-free and dishwasher-safe except digital indicator)
150 litres of fresh filtered water in 4 weeks from just one cartridge - digital Lifetime Indicator BRITA Memo measures time to remind on filter exchange
MAXTRA PRO 4-stage filtration with natural activated carbon and ion-exchanger pearls: pure and fresh water, full aroma in your coffee and tea and reliable limescale protection.
Filters impurities such as certain herbicides, pesticides and pharmaceuticals, reduces taste-impairing substances such as chlorine, limescale and metals like lead and copper
Improved filter performance: BRITA's new innovative micro-mesh reduces microparticles ≥ 30 μm. 4x better than our previous BRITA MAXTRA+ filter cartridge.
Full capacity of 8.2L for 5.2L fresh filtered water, perfect when a water filter jug isn't quite big enough!
Included: 1x water filter XXL tank BRITA Flow, 1x MAXTRA PRO ALL-IN-1 water filter cartridge which lasts 150L and is recyclable

ZeroWater Replacement Water Filter Cartridges, 5 Stage Filtration System Reduces Fluoride, Chlorine, Lead and Chromium, 2 x Filter

Why We Love It

Removes lead and chromium.
Five-stage advanced filtration system.
Purest tasting water guaranteed.

Main Highlights

ONLY NSF CERTIFIED FILTER TO REMOVE LEAD AND CHROMIUM: ZeroWater water filter jugs reduce 99.6 percent of all tap water total dissolved solids
FIVE STAGE DUAL ION EXCHANGE FILTER: The ZeroWater filtration system combines five sophisticated technologies that work together to remove virtually all dissolved solids from your tap water, delivering you great tasting water
FILTRATION SYSTEM: Ion Exchange system removes more total dissolved solids in your water compared to conventional filters
ENJOY THE PUREST TASTING WATER: The amount of dissolved solids in tap water varies across the UK. Each ZeroWater filter removes 18 000 milligrams of dissolved solids leaving you with the purest tasting water. It is important to change your filter when the water quality meter reads above 006ppm
International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

BRITA MAXTRA PRO Pure Performance Water Filter Cartridge - 6 Pack - Original BRITA Refill reducing impurities, Chlorine, PFAS, pesticides and limescale for tap Water with Better Taste

34% OffFree Shipping

Why We Love It

Eco-friendly, sustainable materials.
Enhanced, innovative 4-stage filtration.
Reduces plastic bottle use.

Main Highlights

MAXTRA PRO ALL-IN-1 is now MAXTRA PRO PURE PERFORMANCE. For a short period of time you might receive either while stock changes over
Simplify your hydration: tap water filtered with BRITA maxtra pro simply tastes better, it is softer and cleaner - pure taste in every sip
More sustainable than ever: made in europe from 50% bio-based materials (lid & barrel) and 99% recyclable - check out more on BRITA's website
Taste purity, not impurities: filters off-flavours (chlorine etc.) as well as finest particles (≥ 30 µm), micro impurities such as PFAS* and metals, certain herbicides, pesticides & pharmaceuticals
More efficient than ever: increased filter capacity by +50% (compared to previous model MAXTRA+), filter up to 150L in 4 weeks with every single cartridge - and save up to 150 plastic bottles at the same time
Need extra appliance protection or limescale reduction? Check out the BRITA MAXTRA PRO Limescale Expert cartridge
We are BRITA. A family-owned company with over 50 years of experience and one of the world's leading brands in water filtration. Sustainably made in Europe. German quality & design - since 1966
Included: Replacement pack with 6x original BRITA MAXTRA PRO ALL-IN-1 filter cartridges - each last 150L and are recyclable

BRITA Marella Water Filter Jug Graphite (2.4L) Starter Pack incl. 3x MAXTRA PRO All-in-1 cartridge - fridge-fitting jug with digital LTI and Flip-Lid - now in sustainable Smart Box packaging

9% OffFree Shipping

Why We Love It

Innovative BRITA filtration technology.
Eco-friendly, reduces plastic waste.
German quality and design.

Main Highlights

All-Rounder with the innovative BRITA filtration technology: 150 litres of filtered water with just one cartridge, fitting in standard fridge doors.
Features a spout cover, one-hand filling with the flip-lid, BRITA Memo measures time to remind on filter exchange. BPA-free and dishwasher-safe (except digital indicator)
MAXTRA PRO 4-stage filtration with natural activated carbon and ion-exchanger pearls: pure and fresh water, full aroma in your coffee and tea and reliable limescale protection.
Filters trace impurities, reduces taste-impairing substances such as chlorine, limescale and metals like lead and copper.
Improved filter performance: BRITA's new innovative micro-mesh reduces microparticles ≥ 30 μm. 4x better than our previous BRITA MAXTRA+ filter cartridge
Full capacity of 2.4L for 1.4L fresh filtered water (Cool version only). Need for even more fresh filtered water? Check out BRITA Marella XL, BRITA Style XL and BRITA Flow.
Included: 1x BRITA Marella water filter jug in Graphite, 3x MAXTRA PRO ALL-IN-1 filter cartridges which each last 150L and are recyclable.

BRITA MAXTRA PRO Limescale Expert Water Filter Cartridge 6 Pack (New) - Original BRITA Refill for Ultimate Appliance Protection, reducing impurities, Chlorine and Metals (Package May Vary)

45% OffFree Shipping

Why We Love It

Eco-friendly and recyclable.
Enhanced limescale reduction.
Effective 4-stage filtration.

Main Highlights

MAXTRA PRO Limescale Expert has a new look. For a short period of time you might receive either version of the packaging while stock changes over
The filter for coffee & tea lovers, that makes your hot drinks taste next level. Ideal for protecting your appliances and keep them shining
More sustainable than ever: made in Europe from 50% bio-based materials (lid & barrel) and 99% recyclable - check out more on BRITA's website
50% more effective at removing limescale from your tap water than the BRITA MAXTRA PRO ALL-IN-1 cartridge. Filter odour and taste-impairing substances (chlorine etc.), finest particles (≥ 30 µm) and metals like lead and copper if present in your tap water
Filter up to 100L in 4 weeks with every single cartridge - and save up to 100 plastic bottles at the same time
Need increased filter capacity for cold water drinking? Check out the BRITA MAXTRA PRO All-in-1 cartridge
We are BRITA. A family-owned company with over 50 years of experience and one of the world's leading brands in water filtration. Sustainably made in Europe. German quality & design - since 1966
Included: Replacement pack with 6x original BRITA MAXTRA PRO LIMESCALE EXPERT filter cartridges - each last 100L and are recyclable.

8.7

Excellent

Save 45%

We scanned 988 products

We reviewed these offers relevant to the Water Filters within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like INVIGORATED WATER, Waterdrop, BRITA, iSpring, ZeroWater, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Water Filters in the market, we considered we took a deep dive into 4941 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is PH001 3-Pack Alkaline Water Filter Cartridges – Replacement Cartridge for Invigorated Water Jug – Water Purifier, Filtration System for Pure Drinking Water – 1.136 Liters Capacity. We love many things about this product by INVIGORATED WATER. What sets it apart from the competition is Long-lasting, cost-effective filter, Advanced alkaline water purification, Promotes sustainable living.
The best value product for most shoppers and where user satisfaction is continuously the highest is Waterdrop Water Filter Cartridges, Replacement for Brita® Maxtra+® Plus, Maxtra Pro® All-in-1, Compatible with Brita® Marella® Jug, Brita® Kettle, Reduce PFAS, PFOA/PFOS, TÜV SÜD, NSF Certified (12) by Waterdrop based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Water Filters and the best cost-to-value ratio is BRITA MAXTRA PRO Limescale Expert Water Filter Cartridge 6 Pack (New) - Original BRITA Refill for Ultimate Appliance Protection, reducing impurities, Chlorine and Metals (Package May Vary)at BRITA with a 45% discount.
Our list of the best Water Filters is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Water Filters in The UK

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We scanned 988 products

We concluded that: