<SUBMISSION>
<ACCESSION-NUMBER>0001234689-03-000002
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<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20031111
<FILING-DATE>20031112
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>WATTS WATER TECHNOLOGIES INC
<CIK>0000795403
<ASSIGNED-SIC>3490
<IRS-NUMBER>042916536
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0630
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>815 CHESTNUT ST
<CITY>NORTH ANDOVER
<STATE>MA
<ZIP>01845
<PHONE>9786881811
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>815 CHESTNUT STREET
<CITY>NORTH ANDOVER
<STATE>MA
<ZIP>01845
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>WATTS INDUSTRIES INC
<DATE-CHANGED>19920703
</FORMER-COMPANY>
</ISSUER>
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>POLOFSKY JEFFREY A
<CIK>0001234689
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<FILING-VALUES>
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<ACT>34
<FILE-NUMBER>001-11499
<FILM-NUMBER>03993299
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<BUSINESS-ADDRESS>
<STREET1>WATTS INDUSTRIES INC
<STREET2>ROUTE 815 CHESTNUT ST
<CITY>NORTH ANDOVER
<STATE>MA
<ZIP>01845
<PHONE>9786881811
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>WATTS INDUSTRIES INC
<STREET2>ROUTE 815 CHESTNUT ST
<CITY>NORTH ANDOVER
<STATE>MA
<ZIP>01845
</MAIL-ADDRESS>
</REPORTING-OWNER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>PRIMARY DOCUMENT
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            <rptOwnerCity>NORTH ANDOVER</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>08145</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>426</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>1704</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>15.75</value></conversionOrExercisePrice><transactionDate><value>2003-11-11</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>4000</value></transactionShares><transactionPricePerShare><value>15.75</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F6"/></exerciseDate><expirationDate><value>2013-07-24</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common 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installments on February 5, 2003, 2004, 2005, 2006 and 2007.</footnote><footnote id="F6">The option vests in five equal installments on July 24, 2003, 2004, 2005, 2006 and 2007.</footnote><footnote id="F7">601 of these shares were originally awarded in February, 2000 as restricted stock units under the Issuer's Management Stock Purchase Plan and vested in February, 2003.</footnote><footnote id="F8">Awarded as restricted stock units (RSUs) pursuant to the Issuer's Management Stock Purchase Plan.  RSUs vest three years from the date of award and entitle the owner to one share of Class A Common Stock for each vested RSU on such date or a later date selected by such owner.</footnote></footnotes><remarks/><ownerSignature><signatureName>Lester J. Taufen  Attorney-in-fact</signatureName><signatureDate>2003-11-12</signatureDate></ownerSignature></ownershipDocument>

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