EXHIBIT (21)

Registrant

ECOLAB INC.

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab (Antigua) Ltd.	Antigua	100
Ecolab S.A.	Argentina	100
Ecolab Australia Pty Ltd.	Australia	100
Ecolab Finance Pty Ltd.	Australia	100
Ecolab Pty Ltd.	Australia	100
Ecolab Water Care Services Pty Limited	Australia	100
Gibson Chemical Industries Pty Ltd.	Australia	100
Gibson Chemicals (NSW) Pty Limited	Australia	100
Gibson Chemicals Fiji Pty Limited	Australia	100
Gibson Chemicals Pty Limited	Australia	100
Robust Chemicals Pty Limited	Australia	100
Vessey Chemicals (Holdings) Pty Limited	Australia	95
Vessey Chemicals Pty Limited	Australia	95
Vessey Chemicals (Vic.) Pty Limited	Australia	95
Vessey Chemicals (WA) Pty Limited	Australia	95
Ecolab Ges.m.b.H	Austria	100
Ecolab Holding Europe GmbH	Austria	100
Ecolab Limited	Bahamas	100
Ecolab (Barbados) Limited	Barbados	100
Ecolab B.V.B.A./S.P.R.L.	Belgium	100
Kay N.V.	Belgium	100
Ecolab Emprecendimentos E Participacoes Ltda.	Brazil	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab Quimica Ltda.	Brazil	100
Ecolab EOOD	Bulgaria	100
Ecolab Co.	Canada	100
Ecolab S.A.	Chile	100
Ecolab Colombia S.A.	Colombia	100
Ecolab, Sociedad Anonima	Costa Rica	100
Ecolab d.o.o.	Croatia	100
Ecolab Holding (Cyprus) Limited	Cyprus	100
Ecolab Hygiene s.r.o.	Czech Republic	100
Ecolab ApS	Denmark	100
Ecolab Holding Denmark ApS	Denmark	100
Ecolab, S.A. de C.V.	El Salvador	100
Oy Ecolab AB	Finland	100
ABP SAS	France	100
AEDES SAS	France	100
Aidamort SAS	France	100
Artois Chimie SAS	France	100
Alpha Holding SAS	France	100
Amboile Services SAS	France	100
Amperia SARL	France	100
Biophyte SARL	France	100
Centre Régional de Désinfectisation et de Dératisation SAS	France	100
Compagnie Française de Services SARL	France	100
Ecolab SAS	France	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab SNC	France	100
HIE Piguy SAS	France	100
Hygiene Champenoise SAS	France	100
Hygiene de L’Est SAS	France	100
Lorillou Hygiene SAS	France	100
Muliser SA	France	100
Nigiko SAS	France	100
Omniser SARL	France	100
Paragerm SNC	France	100
SCI Aphomia	France	100
SCI Dugard	France	100
SCI Dumoulin	France	100
SCI Eliomys	France	100
SCI Erebia	France	100
SCI Louvette	France	100
SCI Marco	France	100
SCI Orly	France	100
Bionagro Natureprodukte GmbH	Germany	100
Ecolab Beteiligungs GmbH	Germany	100
Ecolab Deutschland GmbH	Germany	100
Ecolab Export GmbH	Germany	100
Ecolab Holding GmbH	Germany	100
Ecolab GmbH & Co. OHG	Germany	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab Management GmbH	Germany	100
Ecolab NFK Beteilgungen Management GmbH	Germany	100
Ecolab NFK R&D GmbH & Co. OHG	Germany	100
Ecolab NFK R&D Verwaltungs GmbH	Germany	100
Ecolab Technologies GmbH	Germany	100
Lang Apparatebau GmbH	Germany	100
Lang Engineering GmbH	Germany	100
Lang Hygiene Systeme GmbH	Germany	100
Ecolab A.E.B.E.	Greece	100
Ecolab, Sociedad Anonima	Guatemala	100
Peter Cox Insurance Co. Limited	Guernsey	100
Quimicas Ecolab, S.A.	Honduras	100
Ecolab Limited	Hong Kong	100
Ecolab Holding Hungary Ltd.	Hungary	100
Ecolab Hygiene Kft.	Hungary	100
P.T. Ecolab Indonesia	Indonesia	100
Eclab Export Limited	Ireland	100
Ecolab Co.	Ireland	100
Ecolab Finance Company Limited	Ireland	100
Ecolab (Holdings) Limited	Ireland	100
Ecolab Limited	Ireland	100
Ecolab JVZ Limited	Israel	100
Ecolab-Zohar Dalia L.P.	Israel	51
Ecolab-Zohar Dalia Management Company Ltd.	Israel	51
Elton Chemical Srl	Italy	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab Holding Italy Srl	Italy	100
Ecolab Srl	Italy	100
Findesadue Srl	Italy	100
Findesaquattro Srl	Italy	100
H. E. Distribution Srl	Italy	100
Ecolab Limited	Jamaica	100
Ecolab K.K.	Japan	100
Ecolab East Africa (Kenya) Limited	Kenya	100
Ecolab Korea Ltd.	Korea	100
Ecolab SIA	Latvia	100
Ecolab Sdn Bhd	Malaysia	100
Ecolab, S. de R.L. de C.V.	Mexico	100
Ecolab Holdings Mexico, S.A. de C.V.	Mexico	100
Midland Research Laboratories de Mexico, S.A. de C.V.	Mexico	100
Ecolab Maroc S. A.	Morocco	100
Ecolab (Proprietary) Limited	Namibia	100
Ecolab Finance N.V.	Netherlands Antilles (Curacao)	100
Ecolabone B.V.	Netherlands	100
Ecolabtwo B.V.	Netherlands	100
Ecolab Holdings B.V.	Netherlands	100
Ecolab International B.V.	Netherlands	100
Ecolab B.V.	Netherlands	100
Ecolab Limited	New Zealand	100
Ecolab Nicaragua, S.A.	Nicaragua	100
Ecolab A/S	Norway	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab S.A.	Panama	100
Ecolab Chemicals Ltd.	People’s Republic of China	100
Ecolab Philippines Inc.	Philippines	100
Ecolab Sp.z o.o.	Poland	100
Ecolab S.R.L.	Romania	100
ZAO Ecolab	Russia	100
Ecolab Hygiene d.o.o.	Serbia / Montenegro	100
Ecolab Pte. Ltd.	Singapore	100
Ecolab s.r.o.	Slovakia	100
Ecolab d.o.o.	Slovenia	100
Ecolab (Proprietary) Ltd.	South Africa	100
Ecolab Hispano-Portuguesa, S.A.	Spain	100
Ecolab (St. Lucia) Limited	St. Lucia	100
Ecolab AB	Sweden	100
Ecolab GmbH	Switzerland	100
Ecolab Ltd.	Taiwan	100
Ecolab East Africa (Tanzania) Limited	Tanzania	100
Ecolab Ltd.	Thailand	100
Ecolab Temizleme Sistemleri A.S.	Turkey	100
Ecolab East Africa (Uganda) Limited	Uganda	100
Ecolab LLC	Ukraine	100
Ecolab Limited	United Kingdom	100
Ecolab (U.K.) Holdings Limited	United Kingdom	100
Peter Cox Limited	United Kingdom	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Midland Research Laboratories UK Limited	United Kingdom	100
Ecolab S. A.	Uruguay	100
Ecolab Foreign Sales Corp.	U.S. Virgin Islands	100
Ecolab S.A.	Venezuela	74
Ecolab Zimbabwe (Pvt) Ltd.	Zimbabwe	100
United States
Associated Chemicals & Services, Inc.	Kansas	100
Daydots Inc.	Delaware	100
Ecolabone LLC	Delaware	100
Ecolabtwo LLC	Delaware	100
Ecolabthree LLC	Delaware	100
Ecolabfour LLC	Delaware	100
Ecolabfive LLC	Delaware	100
Ecolabsix LLC	Delaware	100
Ecolabseven LLC	Delaware	100
Ecolab Finance Inc.	Delaware	100
Ecolab Finance (Australia) Inc.	Delaware	100
Ecolab Holdings Inc.	Delaware	100
Ecolab Holdings (Europe) Inc.	Delaware	100
Ecolab Investment Inc.	Delaware	100
Ecolab Israel Holdings LLC	Delaware	100
Ecolab Manufacturing Inc.	Delaware	100

Name of Affiliate	State or Other Jurisdiction of Incorporation	Percentage of Ownership
Ecolab Marketing LLC	Delaware	100
GCS Service, Inc.	Delaware	100
Ecolab Foundation	Minnesota	100
Kay Chemical Company	North Carolina	100
Kay Chemical International, Inc.	North Carolina	100
Midland Research Laboratories, Inc.	Kansas	100
ProForce Inc.	North Carolina	100
Wabasha Leasing LLC	Delaware	100

Certain additional subsidiaries, which are not significant in the aggregate, are not shown.