    <SEC-DOCUMENT>0001174947-25-000563-index.html : 20250410
    <SEC-HEADER>0001174947-25-000563.hdr.sgml : 20250410
    <ACCEPTANCE-DATETIME>20250410160809
    ACCESSION NUMBER:		0001174947-25-000563
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20241231
    FILED AS OF DATE:		20250410
    DATE AS OF CHANGE:		20250410
    EFFECTIVENESS DATE:		20250410

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MIDDLESEX WATER CO
    		CENTRAL INDEX KEY:			0000066004
    		STANDARD INDUSTRIAL CLASSIFICATION:	WATER SUPPLY [4941]
    		ORGANIZATION NAME:           	01 Energy & Transportation
    		EIN:				221114430
    		STATE OF INCORPORATION:			NJ
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-00422
    		FILM NUMBER:		25828480

    	BUSINESS ADDRESS:
    		STREET 1:		485C ROUTE 1 SOUTH
    		STREET 2:		SUITE 400
    		CITY:			ISELIN
    		STATE:			NJ
    		ZIP:			08830
    		BUSINESS PHONE:		7326341500

    	MAIL ADDRESS:
    		STREET 1:		485C ROUTE 1 SOUTH
    		STREET 2:		SUITE 400
    		CITY:			ISELIN
    		STATE:			NJ
    		ZIP:			08830
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>ARS
    <SEQUENCE>1
    <FILENAME>ars-33958_msx.pdf
    <DESCRIPTION>2024 ANNUAL REPORT
    <TEXT>
    Document 1 - file: ars-33958_msx.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>