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No idea really.
I'd like a single tap (single hole drilled in surface) with a dual handle (because multi-angle levers with hot water always end up frustrating me) with a (not obvious) pull out function to spray stuff / definitely not use as a bidet and I just happened to think, "wouldnt it be nice if it was filtered water ready for the coffee machine" (a technivorm, which I have to clean fairly regularly as a result of our muck/water).
Could this also equal-
Tap water filter cartridge.
Kitchen Tap with dual handles and hose.
Requisite plumbing adapters.
Or were you thinking-
Hot and cold unfiltered plus a filtered/sparkly drinking option