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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 SUYAPEL4IhMYTM4khn1g71xtDVLhD98CTy40xNqIHyo4qtczVIJvlVX4PB1yn5aI
 MGfz2VC4+WzjNUlGCxyYig==

<SEC-DOCUMENT>0000914317-05-002241.txt : 20050705
<SEC-HEADER>0000914317-05-002241.hdr.sgml : 20050704
<ACCEPTANCE-DATETIME>20050705154008
ACCESSION NUMBER:		0000914317-05-002241
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050701
FILED AS OF DATE:		20050705
DATE AS OF CHANGE:		20050705

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MIDDLESEX WATER CO
		CENTRAL INDEX KEY:			0000066004
		STANDARD INDUSTRIAL CLASSIFICATION:	WATER SUPPLY [4941]
		IRS NUMBER:				221114430
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1500 RONSON RD
		STREET 2:		P O BOX 1500
		CITY:			ISELIN
		STATE:			NJ
		ZIP:			08830
		BUSINESS PHONE:		7326341500

	MAIL ADDRESS:	
		STREET 1:		1500 RONON ROAD
		CITY:			ISELIN
		STATE:			NJ
		ZIP:			08830

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WILLIAMS RONALD F
		CENTRAL INDEX KEY:			0001185367

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-00422
		FILM NUMBER:		05936863

	BUSINESS ADDRESS:	
		STREET 1:		MIDDLESEX WATER CO
		STREET 2:		PO BOX 1500
		CITY:			ISELIN
		STATE:			NJ
		ZIP:			08830
		BUSINESS PHONE:		7326341500

	MAIL ADDRESS:	
		STREET 1:		PO BOX 1500
		CITY:			ISELIN
		STATE:			NJ
		ZIP:			08830
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-69719_rwex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-07-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000066004</issuerCik>
        <issuerName>MIDDLESEX WATER CO</issuerName>
        <issuerTradingSymbol>MSEX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001185367</rptOwnerCik>
            <rptOwnerName>WILLIAMS RONALD F</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11 PEACOCK COURT</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TRENTON</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08619-1117</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President/Operations</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock (Restricted Stock)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6166</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5800</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock (Dividend Reinvestment)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3115</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Number of shares was reported incorrectly in June 2005.  Number reported was 3,121.  The correct number is 3,115.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Kenneth J. Quinn, Power of Attorney for Ronald F. Williams</signatureName>
        <signatureDate>2005-07-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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