Nalco Announces Date for 4th Quarter Earnings Release and Conference Call/Webcast

NAPERVILLE, Ill.--(Business Wire)--
Nalco Holding Company (NYSE:NLC), the global leader in water, energy, air and
process technologies and services that deliver savings for customers and improve
the environment, today announced it will release its fourth-quarter 2008 sales
and earnings results after market close on Feb. 3.

At 10 a.m. ET on Feb. 4, the Company will hold a conference call and live
audio-only Webcast led by Nalco Chairman, President and Chief Executive Officer
J. Erik Fyrwald and other senior management team members to discuss these
results.

Date: 02/04/2009

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: 1-719-325-4801

Confirmation Code: 5489837

To help ensure the conference call begins in a timely manner, please dial in 5
to 10 minutes prior to the scheduled start time on Feb. 4.

The audio-only Webcast will be available through the Investor Relations section
of Nalco`s Web site, www.nalco.com/investors. Following the live event, an
archived version of the Webcast will also be available on the Nalco Web site
under Investor Relations, Event Calendar.

About Nalco

Nalco is the world`s leading water treatment and process improvement company,
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
Index. More than 11,500 Nalco employees operate in 130 countries supported by a
comprehensive network of manufacturing facilities, sales offices and research
centers to serve a broad range of end markets. In 2007, Nalco achieved sales of
more than $3.9 billion. For more information visit www.nalco.com.

Nalco Company
Media:
Charlie Pajor, 630-305-1556
cpajor@nalco.com
or
Investor:
Mike Bushman, 630-305-1025
mbushman@nalco.com

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