Segment Business Reviews From Nalco Executives Set for May 31 and June 28

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Nalco

May 20, 2011, 08:00 ET

NAPERVILLE, Ill., May 20, 2011 /PRNewswire/ -- Nalco (NYSE: NLC), providing essential expertise for water, energy and air, announced today two conference call/webcasts featuring the leaders of the company's Water and Process Services and Energy Services divisions. The presentations will provide an overview of the business opportunities, strategies and performance for each segment.

(Logo: http://photos.prnewswire.com/prnh/20101231/NALCOLOGO)

Steve Taylor, Nalco Executive Vice President and President, Energy Services will present on May 31 at 12:00 p.m. ET. Dave Flitman, Senior Executive Vice President and President, Water and Process Services will present on June 28 at 10:00 a.m. ET. Both events will be available as Webcasts through the Nalco website.

Energy Services

Date: 5/31/2011

Start Time: 12 p.m. ET / 11 a.m. CT / 10 a.m. MT / 9 a.m. PT

Length: 60 minutes

Dial-in Telephone Number:

1-913-312-0672

Confirmation Code:

5336511

Water and Process Services

Date: 6/28/2011

Start Time: 10 a.m. ET / 9 a.m. CT / 8 a.m. MT / 7 a.m. PT

Length: 60 minutes

Dial-in Telephone Number:

1-913-312-1438

Confirmation Code:

6595515

To help ensure the conference call begins in a timely manner, please dial in five to 10 minutes prior to the scheduled start time.

The Webcast of each presentation will be available through the Investor Relations section of Nalco's website, www.nalco.com/investors. Following the live event, an archived version of the Webcast will also be available on the site under Investor Relations, Events/Presentations.

About Nalco

Nalco is the world's largest sustainability services company focused on industrial water, energy and air applications; delivering significant environmental, social and economic performance benefits to our customers. We help our customers reduce energy, water and other natural resource consumption, enhance air quality, minimize environmental releases and improve productivity and end products while boosting the bottom line. Together our comprehensive solutions contribute to the sustainable development of customer operations. Nalco is a member of the Dow Jones Sustainability World and North America Indexes. More than 12,000 Nalco employees operate in 150 countries supported by a comprehensive network of manufacturing facilities, sales offices and research centers to serve a broad range of end markets. In 2010, Nalco achieved sales of $4.25 billion. For more information visit www.nalco.com.

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