Unassociated Document

Item 1.	(a)	Name of Issuer: Mueller Water Products, Inc.
	(b)	Address of Issuer's Principal Executive Offices:
		1200 Abernathy Road NE Suite 1200 Atlanta, GA 30328 USA

Item 2.	(a)	Names of Persons Filing: SAM Sustainable Asset Management AG
	(b)	Address of Principal Business Office or. if None. Residence: Josefstrasse 218, 8005 Zurich
	(c)	Citizenship: Switzerland
	(d)	Title of Class of Securities:COMMON
	(e)	CUSIP Number:624758108

Item 3.	If this statement is filed pursuant to §§240.13d-l(b) or 240.13d-2(b) or (c) check whether the person filing is a:
	(a)	o	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
	(b)	o	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
	(c)	o	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
	(d)	o	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
	(e)	o	An investment adviser in accordance with §240.13d-l (b)(l )(ii)(E).
	(f)	o	An employee benefit plan or endowment fund in accordance with §240.13d-l(b)(l)(ii)(F).
	(g)	o	A parent holding company or control person in accordance with §240.13d-l(b)(l)(ii)(G).
	(h)	o	A savings association as defined in section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813).
	(i)	o	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3).
	(j)	o	Group, in accordance with §240.13d-l(b)(l)(ii)(J).
	(k)	o	Group, in accordance with §240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J), please specify the type of institution:
	If this statement is filed pursuant to Rule 13d-l(c) check this box: x

Item 4	Ownership. Provide the following information regarding the aggregate number and percentage of the class of securities of the Issuer identified in Item 1.
	(a)	Amount beneficially owned: 5343600 common shares
	(b)	Percent of class: 4.59 %
	(c)	Number of shares as to which the person has:
		(i)	Sole power to vote or to direct the vote:
		(ii)	Shared power to vote or to direct the vote:
		(iii)	Sole power to dispose or to direct the disposition of:
		(iv)	Shared power to dispose or to direct the disposition of:
	Instruction. For computations regarding securities which represent a right to acquire an underlying security see §240.13d-3(d)( 1).

Item 5	Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following x. Instruction: Dissolution of a group requires a response to this item.
Item 6.	Ownership of More than Five Percent on Behalf of Another Person. SAM Sustainable Asset Management AG is filing this Schedule 13G in its capacity as investment adviser with discretionary authority with respect to various advisory clients. No individual advisory client is known to have beneficial ownership of 5% of the outstanding shares of Mueller Water Products; Inc.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person. n/a
Item 8.	Identification and Classification of Members of the Group, n/a
Item 9.	Notice of Dissolution of Group, n/a

Item 10.

Certification.

By signing below we certify that, to the best of our knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect

SIGNATURE

After reasonable inquiry and to the best of our knowledge and belief, we certify that the information set forth in this statement is true, complete and correct.

Dated: 12/08/2009

By:
	Christin Forstinger
	Head Legal & Compliance

1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) SAM Sustainable Asset Management AG
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INTRUCTIONS) (a) o (b) ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Switzerland
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		5	SOLE VOTING POWER 5343600
		6	SHARED VOTING POWER 0
		7	SOLE DISPOSITIVE POWER 5343600
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5343600
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.59%
12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS) 00