FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person *   ONEILL PAUL H 2. Date of Event Requiring Statement (Month/Day/Year) 11/10/2004 3. Issuer Name and Ticker or Trading Symbol Nalco Holding CO [oye$p5dc] (Last) (First) (Middle) 343 STATE ST 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) ROCHESTER, NY 14650 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ONEILL PAUL H 343 STATE ST ROCHESTER, NY 14650	  X	Â	Â	Â

Signatures

Filomena Trombino as Attorney in Fact		11/10/2004
**Signature of Reporting Person		Date

Explanation of Responses:

No securities are beneficially owned
*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
  Remarks: (1)  Mr. O'Neill is associated with Blackstone Management Associates IV L.L.C. ("Management") and its  affiliated investment managers.  Management serves as the manager of Blackstone Capital Partners IV  L.P., Blackstone Family Investment Partnership IV-A L.P. and Blackstone Capital Partners IV-A L.P.  (collectively, the "Blackstone Funds"), which may each be deemed beneficial owners of certain shares of  common stock of Nalco Holding Company.  Mr. O'Neill disclaims beneficial ownership of all shares of  Nalco Holding Company common stock that may be deemed beneficially owned by the Blackstone Funds  and Management.  This report shall not be deemed an admission that Mr. O'Neill is the beneficial owner  of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Exchange Act of 1934,  as amended, or for any other purpose. (2) Information with respect to each of the Reporting Persons is given solely by such Reporting Persons,  and no Reporting Person has responsibility for the accuracy or completeness of information supplied by  another Reporting Person.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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