Does this work with my Brita Maxtra jug?

Yes - the Phox compatible cartridge fits all jugs that use Brita Maxtra or Maxtra+ filters, making it easy to switch without replacing your jug.

Is this a good alternative to Brita filters?

Yes - and for many households, it’s a smarter upgrade. Phox provides the same core filtration as traditional filters, but with a refillable cartridge system that significantly reduces plastic waste and ongoing costs. What sets Phox apart is flexibility: instead of a one-size-fits-all filter, you can choose from different refill packs designed for your water - whether that’s reducing limescale in hard water areas or adding magnesium for improved taste and hydration. It’s also made in the UK, helping reduce carbon impact, and the refill packs are smaller and more efficient than standard cartridges - especially when buying in bulk - making them easier to store, deliver, and use long-term.

How does the refillable system work?

You simply open the cartridge and refill it with fresh filter granules every 45 days, instead of replacing the entire plastic unit.

Do I need to buy a new jug to use Phox?

No - this cartridge is designed so you can upgrade your existing setup without buying a new jug.

How much plastic waste does this save?

By reusing the cartridge, you avoid throwing away plastic filters every month, significantly reducing household waste.

Blue brita maxtra refillable water filter cartridge on marble surface

hand pouring alkaline refill pack pouring water filter granules into Blue brita maxtra refillable water filter cartridge

Refillable blue brita cartridge inside clear brita jug on marble surface

Refillable Maxtra+ Compatible - water filter cartridge

Two refill clean pack in recyclable packaging on marble background.

Refillable brita water filter cartridge in recyclable box with clean refill packs

Refillable brita water filter cartridge in recyclable box

Refillable Maxtra+ Compatible - water filter cartridge

Name: Refillable Maxtra+ Compatible - water filter cartridge
Brand: Phox Water
SKU: Phox22
Price: 14.99 GBP
Availability: InStock
Rating: 4.6 (9098 reviews)

Refillable cartridge built for life.

Compatible cartridge is free - just pay for the refills!

Fits any jug that takes Brita Maxtra & Maxtra+ cartridges.

Cartridge is now free, pay for the refill pack only.

Refill included

3 Months £7.50 / Refill

Save 25%

12 Months £6.25 / Refill

Save 17%

Filter choice

Clean

Alkaline

Softener

Price

Rendering loop-subscriptions

£0.00 each

0.00

Purchase Options

Selling Plans

One time Purchase

£14.99

each

Subscribe & Save on Refills

£14.99

each

Frequency

Every 3 months

Subscribe & Save on Refills

£14.99

each

Frequency

Every 3 months

Subscribe & Save on Refills

£14.99

each

Frequency

Every 3 months

Tax included. Shipping calculated at checkout.

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18+, T&C apply, Credit subject to status. Not applicable to subscription purchases.

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Phox Compatible

Not ready to replace your Brita jug?
We make the switch to sustainable filtration simple. That’s why, at Phox, we give you our Brita-compatible refillable cartridge for free - you only pay for the refills.

The Phox Brita Maxtra-compatible cartridge fits Brita Maxtra+ and older Maxtra jugs, letting you upgrade to a more sustainable water filter without changing your jug. It delivers the core Phox benefit - a refillable water filter system designed to reduce plastic waste.

Built to last for years rather than being replaced every 30 days, you simply refill with fresh filter granules every 45 days or 200 litres. Cleaner, better-tasting water with less waste - a smarter, more sustainable Brita alternative.