Ionics, Incorporated. The Group's principal activity is to provide water and water treatment equipment through the use of proprietary separation technologies and systems. The Group's products and services are used to desalt brackish water and seawater, to purify and supply bottled water and to treat water in the home. The products are also used to manufacture and supply water treatment chemicals and ultra pure water, to process food products, recycle and reclaim process water. The Group operates in four segments: Equipment business group, Ultrapure water group, Consumer water group and Instrument business group. The Group has operations for distribution in England and joint ventures in Bahrain, Kuwait and Saudi Arabia. Equipment business group accounted for 50% of 2002 revenues; ultrapure water group, 31%; consumer water group, 11% and instrument business group, 8%.