Water that flows into our sinks and bathtubs either comes from rivers and lakes or from water flowing down below the Earth’s surface called groundwater.Most towns and cities have a big system of pipes that go deep into the Earth, suck groundwater up from down below and pump it through a series of pipes all the way into our homes and schools. Delta Faucet 4353-AR-DST Linden Single Handle Water-Efficient Pull-Out Kitchen Faucet, Arctic Stainless – Touch On Kitchen Sink Faucets – Amazon.com This particular filter system attaches onto the head of your faucet for well over 100 gallons worth of clean, filtered water to help keep you and your loved ones in tip-top shape throughout the year. Possibly a step up from the generally held idea of a faucet filter, it does deliver when it comes to purifying your tap water. Get a seemingly endless supply of crisp tasting water direct from this device. GAPPO Commercial Lead Free Pull Out Kitchen Sink Faucet Dual Handle 3 in 1 High Arc Water Filter Purifier Faucets Gold – – Amazon.com Rated 5 out of 5 by Josie S from Safe drinking water This is my 3rd Aquasana 3 stage under the sink water filter. The first one I had was a 2 stage and as soon as you came out with the 3 stage I ordered it. When my daughter bought her home I purchased one for her and my son recently purchased his home and of course I got him one. .