A sink water filter and a countertop water filter combine efficiency and affordability with easy setup and maintenance. But what exactly are they? And how do they work? A <strong>sink water filter</strong>, also known as a countertop water filter, are low-profile systems that sit on top of your counter and connect to your faucet via small hoses. Neither the filter nor the hoses disrupt normal use of your sink. The water filter system simply takes advantage of the existing exposed faucet to give you easy access to clean, pure water. No drilling, no complicated installation, just purified water at your command. And if you're worried about appearances, a <strong>countertop water filter</strong> is specifically designed to blend in with your kitchen décor and takes up very little counter space when compared with other kitchen appliances. A countertop water filter also makes it easy to change the filters since they're on top of your counter rather than under your sink. Most manufacturers have designed their countertop water filter units to make filter replacement fast and simple and, with the eFilterWater.com <strong>Auto Refresh automatic filter replacement program</strong>, we've made it even easier to regularly change your countertop water filter (sink water filter).