Peak Water - 2 Filter Pack

If you look under the espresso machine at your local café, you’ll likely find a complex filtration system using line pressure to force water through chambers of resin and carbon. These systems allow baristas to adjust water hardness via a bypass valve, tailoring water chemistry to their needs. While effective, they’re bulky, expensive, and impractical for home use.

Peak Water’s revolutionary countertop solution changes that. Using gravity alone, its adjustable filter system lets you customise your water profile with professional-level precision - no plumbing required. Originally launched as a Kickstarter project, Peak Water has evolved into a globally recognised innovation, and Ozone Coffee is proud to have been one of the first places in the world to offer this unique filter system.

Elevate your brewing experience with Peak Water’s Precision Filter Cartridges, engineered to deliver consistently high-quality water for exceptional coffee and tea. Each 2-pack includes fully recyclable filters featuring advanced dual-ion resin and carbon filtration technology. This system effectively reduces both cation and anion minerals, softening tap water and stabilising pH - ideal for unlocking the full flavour potential of your brew. Whether you're a home barista or a café professional, these filters help you achieve café-quality results with every cup.

Designed for use with the Peak Water Jug, these replacement cartridges are perfect for those who value both precision and sustainability. Each filter is recyclable and contains regenerable resin that can be professionally cleaned and reused - often performing better over time. Returned cartridges are disassembled in Essex, where the plastic is recycled, the carbon is composted, and the resin is regenerated for future use. Peak Water’s UK-only prepaid Royal Mail return service makes recycling effortless. This circular design supports both flavour and the planet - learn more on Peak Water’s Sustainability page.

Peak Water filters are customisable to suit a wide range of tap water profiles, thanks to the jug’s adjustable bypass settings. This allows you to fine-tune water hardness for optimal extraction and taste - especially valuable for specialty coffee lovers who understand the critical role water chemistry plays in brewing.

Compared to bottled water, Peak Water offers next-level brewing quality at less than half the cost per litre, without the environmental impact. Whether you're a home barista or a coffee professional, these replacement cartridges help you achieve café-quality results - sustainably and effortlessly.

Each Pack includes 2 x Peak Water Filters

1. What do Peak Water replacement cartridges do?
Peak Water cartridges use a dual-ion resin and carbon filtration system to reduce unwanted minerals and chlorine from tap water. This improves water quality and helps unlock the full flavour potential of your coffee and tea.

2. How often should I replace the filter cartridges?
Each cartridge typically lasts for around 30–60 litres of filtered water, depending on your local water hardness and usage. For optimal performance, it's recommended to replace the cartridge every month.

3. Are the cartridges recyclable?
Yes! Peak Water cartridges are fully recyclable. You can return used cartridges via Peak Water’s prepaid Royal Mail recycling scheme, making it easy to reduce waste and support sustainable brewing.

4. Can I adjust the filtration level with these cartridges?
Absolutely. The Peak Water Jug features adjustable bypass settings, allowing you to fine-tune the filtration level based on your water profile and brewing preferences.

5. Are these cartridges compatible with other water jugs?
No, Peak Water replacement cartridges are specifically designed for use with the Peak Water Jug. They are not compatible with other brands or models.