After years of meticulous engineering and rigorous testing we have formulated a one-of-a-kind 3-stage system that is capable of removing harmful contaminants from your tap water. Now you can get the same clean water you've come to expect from Clearly Filtered right from your faucet. Our revolutionary new 3-Stage Under-the-Sink Filtration System installs neatly under your kitchen sink and filters the water coming from your cold water line. After years of engineering and testing, we are proud to offer our most advanced filter option yet! The best part is the system can be easily installed without a plumber and will provide you and your family with clean water for months to come. Unprecedented up to 99.9% removal of most tap water contaminants including 99.9% removal of Lead, 99.8% removal of Fluoride, and 99.9% removal of Mercury, our 3-stage Under-the-Sink system gives you ready access to clean, safe water for up to 15 months. With everything in the news recently about water contamination in municipal tap water, be sure to have your bases covered with the 3-Stage Under-the-Sink Filter System.Clearly Filtered's proprietary custom-made filters offer 3 stages of protection from common tap water contaminants Filter sets last an average of 1 year (we recommend filters be changed based on usage; large families change filters approximately every 9 months, small families and couples every 12 months, and single users every 15 months) Leak-proof filter heads have built-in shut off valves which make changing filters a twist (no tools needed) Entire unit installs in less than 15 minutes with simple household tools and no need for a plumber 100% BPA-free construction with stainless steel water lines. Made in the USA