The KRAUS® Purita™ 2-Stage Under-Sink Filter System improves water quality by removing contaminants . The 2-filter system contains a carbon block filter and a polypropylene filter that work together to remove particles," reducing contaminants such as lead, select pharmaceuticals, and VOCs while removing chlorine taste and odor" .So your water smells and taste much better. Particularly noticed in my coffee .The  under-counter water filtration system appears well made of quality materials,and was easy to install with basic skills. Installation kit came with everything needed.The fillers also last a long time ,up to 6 months or 700 gallons.Really like that there is a digital display that beeps to reminds you when it is time to order a replacement so important in our busy life .Recommend to family and friends.