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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001382211-08-000154.txt : 20081204
<SEC-HEADER>0001382211-08-000154.hdr.sgml : 20081204
<ACCEPTANCE-DATETIME>20081204182631
ACCESSION NUMBER:		0001382211-08-000154
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20081202
FILED AS OF DATE:		20081204
DATE AS OF CHANGE:		20081204

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HART EVAN
		CENTRAL INDEX KEY:			0001420113

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32892
		FILM NUMBER:		081230764

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		770-206-4000

	MAIL ADDRESS:	
		STREET 1:		1200 ABERNATHY RD
		STREET 2:		SUITE 1200
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30328

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mueller Water Products, Inc.
		CENTRAL INDEX KEY:			0001350593
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS FABRICATED METAL PRODUCTS [3490]
		IRS NUMBER:				203547095
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		1200 ABERNATHY RD
		STREET 2:		SUITE 1200
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30328
		BUSINESS PHONE:		770-206-4200

	MAIL ADDRESS:	
		STREET 1:		1200 ABERNATHY RD
		STREET 2:		SUITE 1200
		CITY:			ATLANTA
		STATE:			GA
		ZIP:			30328

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Mueller Holding Company, Inc.
		DATE OF NAME CHANGE:	20060123
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-12-02</periodOfReport>

    <issuer>
        <issuerCik>0001350593</issuerCik>
        <issuerName>Mueller Water Products, Inc.</issuerName>
        <issuerTradingSymbol>MWA, MWA.B</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001420113</rptOwnerCik>
            <rptOwnerName>HART EVAN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1200 ABERNATHY RD.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 1200</rptOwnerStreet2>
            <rptOwnerCity>ATLANTA</rptOwnerCity>
            <rptOwnerState>GA</rptOwnerState>
            <rptOwnerZipCode>30328</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP, Controller</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Series A Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>35496</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>55826.14</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.49</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2008-12-02</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>66539</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2018-12-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Series A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>66539</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>66539</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Acquisition is pursuant to grant of restricted stock units under the Mueller Water Products, Inc. Amended and Restated 2006 Stock Incentive Plan.  Each restricted stock unit represents a contingent right to receive one share of Mueller Water Products, Inc. Series A Common Stock when the restrictions lapse. The lapse occurs in three (3) equal, annual installments beginning on December 2, 2009.</footnote>
        <footnote id="F2">Includes 3182.14 shares acquired under the Mueller Water Products, Inc. Employee Stock Purchase Plan.</footnote>
        <footnote id="F3">The stock options will vest in three (3) equal, annual installments beginning on December 2, 2009.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Stacey K. Geer, Attorney-in-fact for Evan L. Hart</signatureName>
        <signatureDate>2008-12-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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