EX-21 4 exhibit21.txt EXHIBIT 21 IONICS, INCORPORATED SUBSIDIARIES OF THE REGISTRANT State or Other Jurisdiction Name of Incorporation Aqua Design, Inc.* California Elite Chemicals Pty. Ltd. Australia Favourable Trading Ltd. (dba Ionics Ireland) Ireland Fidelity Purewater, Inc. California Fidelity Water Systems, Inc. California Global Water Services, S.A.+ Panama Ionics Acapulco, S.A. de C.V. Mexico Ionics Agar Environmental Ltd. Israel Ionics Asia-Pacific Pte. Ltd. Singapore Ionics (Bermuda) Ltd.* Bermuda Ionics Caribbean Investors Ltd. St. Lucia Ionics Constructors Trinidad Ltd. Trinidad and Tobago Ionics Foreign Sales Corporation Limited Jamaica Ionics France S.A. France Ionics Freshwater Ltd.++ Barbados Ionics Iberica, S.A. Spain Ionics Italba, S.p.A.+++ Italy Ionics Korea, Inc. Delaware Ionics Life Sciences, Inc. New Jersey Ionics Nederland B.V. The Netherlands Ionics Taiwan, Inc. Taiwan Ionics Ultrapure Water Corporation California Ionics (U.K.) Limited++++ United Kingdom Ionics Ventures Ltd. United Kingdom Ionics Water Resources Ltd. Israel Ionics Watertec Pty. Ltd. Australia Kunshan Ionics Limited China Resources Conservation Co. International Delaware Separation Technology, Inc.** Minnesota Sievers Instruments, Inc. Colorado ----------------------- * The Registrant, either directly, through Aqua Design, Inc. or through Ionics (Bermuda) Ltd., wholly owns 10 corporations incorporated in various Caribbean jurisdictions which own and operate, or operate and maintain, desalination plants for the supply of potable water to resorts, hotels and municipalities. ** Owns a U.K. subsidiary, SeparaTech Limited. + This entity is wholly owned by Ionics (U.K.) Ltd. ++ Registrant owns 50% of this entity. +++ This entity owns a 75% interest in Agrinord S.r.l., an Italian corporation in the waste treatment business. ++++ This entity is wholly owned by Ionics Ventures Ltd.