Drinking water filter systems improve the taste, cleanliness, and quality of water. These filter systems remove contaminants and particulates and reduce taste and odor concerns associated with chlorine. Drinking water filters are available for whole-house and under-sink applications using drop-in filter cartridges, quick-connect filters, or reverse osmosis (RO) filters. Drinking water filter housings include housing from 3M, Culligan, and Pentair. Complete drinking water filter systems are available for whole-house, under-sink, and reverse osmosis.