Three-way taps that bring hot, cold and filtered water to one fitting, with a separate spout so filtered water never mixes with the mains supply. The tap is the outlet, not the filter: you still need a filter system plumbed in behind it.
Best for: Kitchens where a second countertop spout is not wanted, paired with an under-sink or RO system · £207
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Osmio Sofia Long Reach 3-Way Triflow Tap
Filter Tap
Why it fits
Separate spout keeps filtered water from mixing with the hot and cold supply
Hot, cold and filtered from one fitting, so no second spout on the worktop
Made in Italy, with a 3-year warranty on parts and valves
Trade-offs
Filters nothing by itself: you still need an under-sink or RO system behind it, from about £60 extra
Osmio recommend a pressurised hot water system; on gravity-fed hot water the flow may be too low unless it is pumped
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