BRITA Marella 2.4L
A sensible starting point when a fridge-door jug and a widely stocked cartridge family matter more than a large reservoir.
Check firstTwo large bottles can mean another refill.
Read the fit & ownership guide →View on Amazon ↗Water filter guides for UK homes
Compare jugs, gravity filters, tap and under-sink systems, and countertop appliances. Check the fit, find the right refill and understand the upkeep before buying.
Find your starting point
Start with the system you want, the replacement you need or the question you are trying to answer.

Compare filtered capacity, fridge fit, cartridge systems and the everyday work of refilling.
Explore jugs & dispensers →
Match the family and generation, choose the right pack and plan the cost of replacements.
Find your cartridge →
Check the outlet, installation requirements and access to every filter stage before committing.
Compare installed filters →
Understand taste, scale and treatment claims, then find cleaning, storage and troubleshooting advice.
Understand & maintain →Before you buy
Taste, kettle scale and a named reduction claim are different decisions. Separate taste from limescale.
For a jug, compare the water ready to pour with what you use at once. Then measure the shelf and removal space.
Find the exact refill before buying the system. Compare annual cartridge costs using your current pack price and consumption.
Different systems, different commitments · Ad
These are examples of different formats, with different fitting and treatment requirements. Read the relevant guide before choosing a model.
Compare jugs, tap-mounted and under-sink filters →A sensible starting point when a fridge-door jug and a widely stocked cartridge family matter more than a large reservoir.
Check firstTwo large bottles can mean another refill.
Read the fit & ownership guide →View on Amazon ↗A tap-mounted option for filtered drinking water without keeping a jug topped up. Its manual change reminder suits someone happy to track cartridge use.
Check firstAdded bulk at the outlet and no hardness reduction.
Read the fit & ownership guide →View on Amazon ↗The selected Amazon bundle names HIP TRIO, limescale and fluoride prefilters, a Biotect Ultra ceramic stage, pillar tap and installation kit.
Check firstPlumbing work, tap placement and several consumables.
Read the fit & ownership guide →View on Amazon ↗Explore the wider choice

Gravity & ceramic filters
Compare system size, ceramic grade, preparation and cleaning before choosing a countertop gravity filter.

RO, heated & chilled appliances
Reverse osmosis (RO), hot-water dispensing and chilling serve different purposes. Check tank refilling, replacement filters, energy and cleaning before choosing an appliance.
For the system you already own
A slow filter or an overdue reminder is a reason to check the system, not automatically replace the whole thing.
Compatible MAXTRA PRO refills · Ad
For a confirmed compatible MAXTRA PRO jug or Flow. This pack does not fit Classic, MicroDisc or ON TAP systems.
Compare cartridge purpose →View on Amazon ↗Have a different system? Use the full cartridge compatibility directory before ordering.
Start with a useful answer
If your tap water is safe to drink and you like its taste, a filter may add little. A taste preference or scale-related aim is a different question from a new supply concern. Start with our UK decision guide; contact your supplier about a new or unexpected change.
Compare the purpose, available space and upkeep first. A jug needs refilling, a tap-mounted unit needs a compatible outlet, and an under-sink system needs installation and access. Use the buying-advice guide to choose a route, including gravity and countertop appliance options.
Only choose a product for scale when the exact cartridge has the relevant hardness-reduction claim. A taste-focused filter does not automatically do the same job, and a jug does not treat water flowing to the rest of the home. Read taste filtration versus limescale reduction.
Match the device model, cartridge family, generation and fitting. A familiar brand or similar shape is not enough. The compatibility directory separates jug, tap, gravity and RO families, with links to the detailed checks.
Keep the purpose clear
Decide what you want to change before comparing products. For a new or unexpected change in taste, smell or appearance, begin with your water supplier.
Our guides compare documented features, fitting requirements and ongoing care using manufacturer manuals and authoritative water guidance. The aim is a choice you can keep supplied and maintain.
Decide whether you need a filter →