You need a hole in your countertop. If you already have a spare hole (for soap or a random button), use that. Otherwise, drill into granite like a Viking. Use a diamond bit and plenty of water to cool it. It will take 20 minutes. Play a podcast about conspiracy theories to stay sane.
How to Install Reverse Osmosis Drinking Water System: Easy Steps Guide
Insert the faucet through the hole. Tighten the nut from below. This is a core workout—you’ll be lying on your back, arms aching, cursing the day you bought a fancy sink. But when the faucet stands tall and shiny, you’ll feel like a god of hydration.