<SEC-DOCUMENT>0001174947-19-001039-index.html : 20190906
<SEC-HEADER>0001174947-19-001039.hdr.sgml : 20190906
<ACCEPTANCE-DATETIME>20190906154110
ACCESSION NUMBER:		0001174947-19-001039
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20190906
DATE AS OF CHANGE:		20190906
EFFECTIVENESS DATE:		20190906

FILER:

	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

	FILING VALUES:
		FORM TYPE:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-233649
		FILM NUMBER:		191079590

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-3ASR
<SEQUENCE>1
<FILENAME>s3asr-22573_msx.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: s3asr-22573_msx.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5
<SEQUENCE>2
<FILENAME>ex5.htm
<DESCRIPTION>EX-5
<TEXT>
Document 2 - file: ex5.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>ex23-1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: ex23-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>image_001.gif
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: image_001.gif

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>image_001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: image_001.jpg

</DOCUMENT>
</SEC-DOCUMENT>