This Modern 3 way mixer tap can be installed in your sink in place of your old mixer tap, so there is no need for a 2nd water filter tap on your sink.  It will provide your usual mains hot and cold tap water as before, but in addition it will also provide your filtered water... all from the one mixer tap. This tap will do away with the necessity of installing a separate filtered water faucet and will complement your new or existing kitchen fixtures.  Clean line and minimalistic. And, it's perfect if your'e renting! Simply replace your existing kitchen tap and swap it back over when you leave.  Such a cleaver idea!