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EXHIBIT (21.1)

SUBSIDIARIES OF ECOLAB INC.

Entity Name

State or Other

Jurisdiction of

Incorporation

NLC Process and Water Services SARL

Algeria

Ecolab (Antigua) Ltd.

Antigua & Barbuda

Anios America S.A.

Argentina

Ecolab Argentina S.R.L.

Argentina

Ecolab Services Argentina S.R.L.

Argentina

Ecolab (Aruba) N.V.

Aruba

Ecolab (Fiji) Pty Limited

Australia

Ecolab AU2 Pty Ltd

Australia

Ecolab AU3 Pty Ltd

Australia

Ecolab AU4 Pty Ltd

Australia

Ecolab Pty Ltd.

Australia

Purolite Pty Ltd

Australia

Aqua Holding Technical Materials GmbH

Austria

Christ Water Technology GmbH

Austria

Ecolab GmbH

Austria

Nalco Holdings GmbH

Austria

NALCO ÖSTERREICH GmbH

Austria

Ovivo Aqua Austria GmbH

Austria

Ecolab Limited

Bahamas

Ecolab Bahrain W.L.L

Bahrain

Ecolab (Barbados) Limited

Barbados

CID LINES NV

Belgium

Ecolab B.V.

Belgium

Ecolab Production Belgium B.V.

Belgium

Kay BV

Belgium

NALCO BELGIUM B.V.

Belgium

Ecolab Quimica Ltda.

Brazil

Purolite do Brasil Ltda

Brazil

Nalco (BN) SDN BHD

Brunei Darussalam

17162979 Canada Limited

Canada

Ecolab CDN 2 Co.

Canada

Ecolab CDN 4 ULC

Canada

Ecolab Co. Compagnie Ecolab

Canada

Nalco Canada ULC

Canada

Ovivo Inc.

Canada

1


Entity Name

State or Other

Jurisdiction of

Incorporation

Ecolab SpA

Chile

NALCO INDUSTRIAL SERVICES (SUZHOU) CO., LTD.

China

Ovivo Chengdu Co., Ltd

China

Ovivo Shenzhen Co., Ltd

China

Purolite (China) Co., Ltd.

China

Purolite (Zhejiang) Technology Co., Ltd.

China

Xi’an Purovo Material Co., Ltd

China

Zhejiang Purosoft Environment Engineering Co., Ltd

China

Ecolab (GZ) Chemicals Limited

China

Ecolab (Taicang) Technology Co., Ltd.

China

Jianghai Environmental Protection Co., Ltd.

China

NALCO INDUSTRIAL SERVICES (NANJING) CO., LTD.

China

Ovivo Dalian Co., Ltd

China

Aqua Technical Materials Shanghai Co., Ltd

China

Ecolab (China) Investment Co., Ltd

China

Nalco (China) Environmental Solution Co. Ltd.

China

NALCO (SHANGHAI) TRADING CO. LTD.

China

Ovivo China Co., Ltd.

China

Ecolab Colombia S. A.

Colombia

Ecolab SRL

Costa Rica

Purolite s.r.o.

Czech Republic

Chamtech, L.L.C.

Delaware

Chemlink Laboratories, LLC

Delaware

Ecolab Acquisition LLC

Delaware

Ecolab Holdings (Europe) LLC

Delaware

Ecolab Holdings Inc.

Delaware

Ecolab Israel Holdings LLC

Delaware

Ecolab Lux Partner LLC

Delaware

Ecolab Manufacturing Inc.

Delaware

Ecolab Production LLC

Delaware

Ecolab U.S. 12 LLC

Delaware

Ecolab U.S. 2 Inc.

Delaware

Ecolab U.S. 6 LLC

Delaware

Ecolab U.S. 9 LLC

Delaware

Ecolab US 1 GP

Delaware

Ecolab USA Inc.

Delaware

NALCO CHINA HOLDINGS LLC

Delaware

Nalco Company LLC (1)

Delaware

Nalco Contract Operations, LLC

Delaware

NALCO HOLDING COMPANY

Delaware

NALCO INDUSTRIAL OUTSOURCING COMPANY

Delaware

2


Entity Name

State or Other

Jurisdiction of

Incorporation

Nalco Production LLC

Delaware

NALCO PWS, INC.

Delaware

NALCO TWO, INC.

Delaware

NALCO WORLDWIDE HOLDINGS LLC

Delaware

Ovivo Electronics USA LLC

Delaware

Ovivo US Holding Inc.

Delaware

Pest Management LLC

Delaware

Purolite LLC

Delaware

Quantum Technical Services, LLC

Delaware

Wabasha Leasing LLC

Delaware

Wastech Systems LLC

Delaware

Ecolab ApS

Denmark

NALCO DANMARK APS

Denmark

Ecolab Ecuador Cia. Ltda.

Ecuador

NALCO EGYPT TRADING

Egypt

NALCO EGYPT, LTD.

Egypt

Ecolab, S.A. de C.V.

El Salvador

Ecolab Pte Ltd

Fiji

NALCO FINLAND MANUFACTURING OY

Finland

NALCO FINLAND OY

Finland

Oy Ecolab AB

Finland

Anios Diffusion SAS

France

Anios Manufacturing SAS

France

DMD

France

Ecolab FR 1 SAS

France

Ecolab FR 4 SAS

France

Ecolab Pest France SAS

France

Ecolab Production France SAS

France

Ecolab SAS

France

Ecolab Services SNC

France

Ecolab SNC

France

Hydenet SAS

France

Laboratoires Anios SAS

France

Laboratoires Anios-Distribution SAS

France

NALCO FRANCE SAS

France

Ovivo France SAS

France

Purolite SAS

France

Soluscope SAS

France

Ecolab U.S. 14 Inc.

Georgia

Ecolab DE 1 GmbH

Germany

Ecolab Deutschland GmbH

Germany

3


Entity Name

State or Other

Jurisdiction of

Incorporation

Ecolab Engineering GmbH

Germany

Ecolab Export GmbH

Germany

Ecolab Pest Deutschland GmbH

Germany

Nalco Deutschland GmbH

Germany

Nalco Deutschland Manufacturing GmbH

Germany

Nalco Manufacturing Beteiligungs GmbH

Germany

Nalco Real Estate GmbH

Germany

Ovivo Deutschland GmbH

Germany

Purolite GmbH

Germany

Ecolab A.E.

Greece

Ecolab (Guam) LLC

Guam

Ecolab, Sociedad Anonima

Guatemala

Quimicas Ecolab S.A. de C.V.

Honduras

Aqua Asia Limited

Hong Kong

Ecolab Limited

Hong Kong

Ecolab Name Holding Limited

Hong Kong

Ecolab Water Holding Limited

Hong Kong

NALCO HONG KONG LIMITED

Hong Kong

Ovivo HK Limited

Hong Kong

Ecolab Global Business Services Kft.

Hungary

Ovivo Hungary Kft.

Hungary

Ecolab Food Safety & Hygiene Solutions Private Limited

India

Ecolab Global Services Private Limited

India

Nalco Water India Private Limited

India

Purolite Private Limited

India

PT Ecolab International Indonesia

Indonesia

PT Ecolab Synergy Indonesia

Indonesia

Ecolab Finance Company Designated Activity Company

Ireland

Ecolab Limited

Ireland

Ecolab Manufacturing IE Limited

Ireland

Ecolab JVZ Limited

Israel

NALCO ISRAEL INDUSTRIAL SERVICES LTD

Israel

Ovivo Israel Ltd.

Israel

Ecolab Holding Italy S.R.L.

Italy

Ecolab Production Italy S.R.L.

Italy

Ecolab S.R.L.

Italy

Nalco Italiana Holdings S.R.L.

Italy

Nalco Italiana Manufacturing S.R.L.

Italy

Nalco Italiana S.R.L.

Italy

Nuova Farmec S.r.l.

Italy

Ecolab Limited

Jamaica

4


Entity Name

State or Other

Jurisdiction of

Incorporation

Ecolab G.K.

Japan

KATAYAMA NALCO INC.

Japan

Nalco Japan G.K.

Japan

Purolite KK

Japan

Aqua Environmental Limited

Jersey

Cymru Holdings Limited

Jersey

Company Ecolab LLP

Kazakhstan

QazSorbent LLP

Kazakhstan

Ecolab East Africa (Kenya) Limited

Kenya

ECOLAB KOREA LIMITED

Korea, Republic Of

Ecolab Water CO., LTD.

Korea, Republic Of

Purolite LLC

Korea, Republic Of

Ovivo Malaysia Sdn Bhd

Kuala Lumpur

Ecolab, SIA

Latvia

Nalco Libya

Libya

Ecolab LUX & Co Holdings S.C.A.

Luxembourg

Ecolab LUX 1 Sarl

Luxembourg

Ecolab Lux 10 Sarl

Luxembourg

Ecolab Lux 12 SCA

Luxembourg

Ecolab Lux 13 Sarl

Luxembourg

Ecolab Lux 14 Sarl

Luxembourg

Ecolab Lux 16 Sarl

Luxembourg

Ecolab Lux 17 Sarl

Luxembourg

Ecolab Lux 18 Sarl

Luxembourg

Ecolab LUX 2 Sarl

Luxembourg

Ecolab LUX 4 Sarl

Luxembourg

Ecolab LUX 7 Sarl

Luxembourg

Ecolab Lux 9 Sarl

Luxembourg

Ecolab LUX Sarl

Luxembourg

Nalco Worldwide Holdings S.a r.l./B.V.

Luxembourg

Ecolab Limitada

Macau

Ecolab International SDN BHD

Malaysia

Ecolab Sdn. Bhd.

Malaysia

Ecolab Services Malaysia SDN. BHD.

Malaysia

Ecolab Malta 1 Limited

Malta

Ecolab Malta 2 Limited

Malta

Ecolab Malta 3 Limited

Malta

Ecolab Malta 4 Limited

Malta

Ecolab Malta GPS Limited

Malta

Ecolab MT Limited

Malta

Barclay Water Management, Inc.

Massachusetts

5


Entity Name

State or Other

Jurisdiction of

Incorporation

Barclay Water Treatment Company, Inc.

Massachusetts

Abednego de Mexico S. de R.L. de C.V.

Mexico

CID Lines Mexico, S.A. DE C.V.

Mexico

Ecolab, S. de R.L. de C.V.

Mexico

NALCO DE MEXICO, S. de R. L. de C.V.

Mexico

Productos Químicos Flottec, S. de R.L. de C.V.

Mexico

Purolite, S. de R.L. de C.V.

Mexico

Abednego Environmental Services, LLC

Michigan

Abednego Mexico Holdings, LLC

Michigan

Ecolab Maroc Société à Responsabilité Limitée

Morocco

Ecolab B.V.

Netherlands

ECOLAB NL 10 B.V.

Netherlands

Ecolab NL 11 B.V.

Netherlands

Ecolab NL 15 BV

Netherlands

Ecolab NL 16 B.V.

Netherlands

Ecolab NL 23 B.V.

Netherlands

Ecolab NL 3 BV

Netherlands

Ecolab Production Netherlands B.V.

Netherlands

Ecolabone B.V.

Netherlands

NALCO DUTCH HOLDINGS B.V.

Netherlands

NALCO EUROPE B.V.

Netherlands

NALCO GLOBAL HOLDINGS B.V.

Netherlands

Nalco Holding B.V.

Netherlands

Nalco International Holdings B.V.

Netherlands

NALCO NETHERLANDS B.V.

Netherlands

NALCO OVERSEAS HOLDING B.V.

Netherlands

NALCO UNIVERSAL HOLDINGS B.V.

Netherlands

Ovivo Holland B.V.

Netherlands

Nalco Wastewater Contract Operations, Inc.

New York

Ecolab New Zealand

New Zealand

Purolite NZ Limited

New Zealand

Ecolab y Compañia Colectiva de Responsabilidad Limitada

Nicaragua

MOBOTEC AB, LLC

North Carolina

Ecolab AS

Norway

NALCO PAKISTAN (PRIVATE) LIMITED

Pakistan

Ecolab S.A.

Panama

Ecolab Paraguay S.R.L.

Paraguay

NANOSPECIALTIES, LLC

Pennsylvania

Ecolab Peru Holdings S.R.L.

Peru

Ecolab Philippines Inc.

Philippines

NALCO PHILIPPINES INC.

Philippines

6


Entity Name

State or Other

Jurisdiction of

Incorporation

CID Lines Sp. z o. o.

Poland

Ecolab Services Poland Sp. z o o

Poland

Ecolab Sp. z o o

Poland

Nalco Polska Sp. z o. o.

Poland

Purolite sp. z o.o.

Poland

NALCO PORTUGUESA (QUÍMICA INDUSTRIAL), UNIPESSOAL LDA

Portugal

Ecolab Water and Hygiene Trading W.L.L.

Qatar

Purolite SRL

Romania

AO Ecolab

Russian Federation

CID Lines LLC

Russian Federation

Meratech Rus Group LLC

Russian Federation

NALCO COMPANY OOO

Russian Federation

Ecolab (St. Lucia) Limited

Saint Lucia

Ecolab Arabia Regional Headquarters LLC

Saudi Arabia

NALCO SAUDI CO. LTD.

Saudi Arabia

Ecolab Hygiene d.o.o.

Serbia

Ecolab Pte. Ltd.

Singapore

NALCO ASIA HOLDING COMPANY PTE. LTD.

Singapore

Ovivo Singapore Pte Ltd.

Singapore

Purolite Pte. Ltd.

Singapore

Ecolab d.o.o.

Slovenia

Ecolab (Proprietary) Limited

South Africa

Ecolab Investment Holdings Proprietary Limited

South Africa

Lobster Ink Africa (Pty.) Ltd.

South Africa

NALCO AFRICA (PTY.) LTD.

South Africa

Purolite (Pty) Ltd

South Africa

DERYPOL SA

Spain

Ecolab Hispano-Portuguesa S.L.

Spain

Ecolab Spain Services S.L.U.

Spain

Hicopla SL

Spain

NALCO ESPANOLA MANUFACTURING, S.L.U.

Spain

NALCO ESPAÑOLA, S.L.

Spain

Ecolab AB

Sweden

NALCO AB

Sweden

Ovivo Europe Holding AB

Sweden

Ecolab (Schweiz) GmbH

Switzerland

Ecolab CH 1 GmbH

Switzerland

Ecolab CH 2 GmbH

Switzerland

Ecolab CH 6 GmbH

Switzerland

Ecolab Europe GmbH

Switzerland

Lobster International S.A.

Switzerland

7


Entity Name

State or Other

Jurisdiction of

Incorporation

Nalco Schweiz GmbH

Switzerland

Ovivo Switzerland AG

Switzerland

Purolite SARL

Switzerland

Ecolab Ltd.

Taiwan

NALCO TAIWAN CO., LTD.

Taiwan

Ovivo Taiwan Co. Ltd.

Taiwan

Ecolab East Africa (Tanzania) Limited

Tanzania

Flottec, LLC

Texas

Ecolab Limited

Thailand

NALCO INDUSTRIAL SERVICES (THAILAND) CO. LTD.

Thailand

Ecolab (Trinidad and Tobago) Unlimited

Trinidad And Tobago

Purolite LLC

Tunisia

Ecolab Temizleme Sistemleri Limited Sirketi

Turkey

Nalco Anadolu Kimya Sanayi ve Ticaret Limited Sirketi

Turkey

Oksa Kimya Sanayi A.S.

Turkey

Purolite Ileri Kimyasal Ticaret Ltd

Turkey

Ecolab East Africa (Uganda) Limited

Uganda

Ecolab TZOV

Ukraine

Ecolab Emirates General Trading LLC

United Arab Emirates

Ecolab Gulf FZE

United Arab Emirates

Nalco Emirates General Trading LLC

United Arab Emirates

Nalco Middle East FZE

United Arab Emirates

Bro-Tech Limited

United Kingdom

Ecolab (U.K.) Holdings Limited

United Kingdom

Ecolab GB 1 Limited

United Kingdom

Ecolab Limited

United Kingdom

Ecolab Manufacturing UK Limited

United Kingdom

LHS (UK) Limited

United Kingdom

NALCO ACQUISITION ONE

United Kingdom

NALCO INVESTMENTS U.K. LIMITED

United Kingdom

NALCO LIMITED

United Kingdom

NALCO MANUFACTURING LTD.

United Kingdom

Purolite (Int.) Ltd

United Kingdom

Purolite Ltd

United Kingdom

Technical Textile Services Limited

United Kingdom

Ecolab S.R.L.

Uruguay

Ecolab S.A.

Venezuela

Ecolab Viet Nam Company Limited

Viet Nam

(1) This subsidiary also conducts business under the assumed name of NALCO Water, An Ecolab Company.

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