AquaTru Classic
The best reverse osmosis option if you can't (or won't) plumb anything in — exceptionally well-certified, and it just sits on the worktop.
Read our AquaTru Classic review →Water filter reviews
Honest, research-based reviews of the water filters UK households are actually considering — judged on certification, hard-water performance, UK pricing and verified owner reviews. How we research →
Frizzlife PD600
A strong under-sink RO system that remineralises the water for better taste and shows live TDS — the pick if flat-tasting RO water puts you off.
Read our Frizzlife PD600 review →
Waterdrop G3P600
The best all-round tankless RO system for UK homes — well-certified, genuinely fast, and fairly priced if you buy it on offer.
Read our Waterdrop G3P600 review →
Waterdrop G3P800
The fastest, most efficient tankless RO Waterdrop sells in the UK — worth the premium only for high-demand households.
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Waterdrop G5P700A
A G3P600 with added alkaline remineralisation and a bit more flow — often for less money. The value pick if you want better-tasting, mineralised RO water.
Read our Waterdrop G5P700A review →
AquaTru Carafe
A beautiful, compact glass-carafe RO purifier for smaller kitchens — but the larger Classic is better value for most homes.
Read our AquaTru Carafe review →
Osmio EZFITPRO-400
A clever, affordable UK-made under-sink filter that wastes no water and needs no power — just don't expect full reverse-osmosis purification.
Read our Osmio EZFITPRO-400 review →
Waterdrop K6
Brilliant if you want instant hot, filtered water on demand — but a pricey, niche choice if you only need cold RO.
Read our Waterdrop K6 review →