The Culligan Good Water Machine point-of-use filtration system uses a reverse osmosis membrane to reduce dissolved substances in water such as radium, lead, and arsenic. The membrane combines with a sediment filter to screen out particles down to 5 microns, a carbon filter to reduce elements that cause unpleasant tastes and odors, and a second carbon filter to remove any remaining impurities. The unit dispenses filtered water at any sink through its faucet, which is available in polished chrome or white finishes and includes lights that indicate filter status. 800.285.5442. www.culligan.com. Circle 153.