MIDDLESEX WATER COMPANY

New Jersey — Community Water System — PWSID: NJ1225001

System Information

PWSID	NJ1225001
System Name	MIDDLESEX WATER COMPANY
System Type	Community Water System
Water Source	Surface Water
Activity Status	Active
Owner Type	Private
EPA Region	02
Serves School	No
Wholesaler	No
First Reported	Mar 1, 1980
Last Reported	Dec 23, 2025

Location & Contact

State	New Jersey
City	ISELIN
ZIP Code	08830
Address	485-C ROUTE 1 SOUTH
Organization	FULLAGAR, ROBERT
Phone	732-638-7537

Population & Service

Population Served	233,376
Service Connections	58,344

Drinking Water Violations (43)

This water system has 43 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Apr 1, 2023	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	May 25, 2023	Lead and Copper Rule
Apr 1, 2023	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	May 25, 2023	Lead and Copper Rule
Feb 10, 2022	—	Public Notice	Other	No	No	—	—	—	Resolved	Aug 1, 2023	Public Notice Rule and Revised PN Rule
Jan 1, 2022	Jun 30, 2022	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 30, 2022	Lead and Copper Rule
Jan 1, 2022	Jun 30, 2022	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 30, 2022	Lead and Copper Rule
Jan 1, 2022	Jun 30, 2022	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jun 30, 2022	Lead and Copper Rule
Jul 1, 2020	Dec 31, 2020	Lead and Copper Rule	MR	No	No	—	TT	—	Archived	Dec 31, 2020	Lead and Copper Rule
Jul 1, 2020	Dec 31, 2020	Lead and Copper Rule	MR	No	No	—	TT	—	Archived	Dec 31, 2020	Lead and Copper Rule
Jul 1, 2020	Dec 31, 2020	Lead and Copper Rule	MR	No	No	—	TT	—	Archived	Dec 31, 2020	Lead and Copper Rule
Jul 1, 2020	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 29, 2020	Consumer Confidence Rule
Jul 1, 2020	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 29, 2020	Consumer Confidence Rule
Jul 1, 2019	Dec 31, 2019	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Dec 31, 2019	Lead and Copper Rule
Jul 1, 2019	Dec 31, 2019	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Dec 31, 2019	Lead and Copper Rule
Jul 1, 2019	Dec 31, 2019	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Dec 31, 2019	Lead and Copper Rule
Jul 1, 2019	Dec 31, 2019	Lead and Copper Rule	TT	Yes	No	—	TT	—	Resolved	Dec 31, 2019	Lead and Copper Rule
Oct 1, 2018	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Oct 24, 2018	Lead and Copper Rule
Oct 1, 2018	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Oct 24, 2018	Lead and Copper Rule
Jul 1, 2018	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 23, 2018	Consumer Confidence Rule
Jul 1, 2018	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 23, 2018	Consumer Confidence Rule
Jul 1, 2017	Dec 31, 2017	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 10, 2017	Lead and Copper Rule
Jul 1, 2017	Dec 31, 2017	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jul 10, 2017	Lead and Copper Rule
Jan 1, 2017	Jun 30, 2017	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 21, 2017	Lead and Copper Rule
Jan 1, 2017	Jun 30, 2017	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 21, 2017	Lead and Copper Rule
Oct 1, 2015	Dec 31, 2015	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Dec 31, 2015	Stage 1 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2015	Dec 31, 2015	Chlorine	MR	No	Yes	—	4.0 mg/L	—	Resolved	Dec 31, 2015	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2014	Aug 31, 2014	TTHM	MR	No	No	—	0.080 mg/L	—	Resolved	Aug 8, 2014	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2014	Aug 31, 2014	TTHM	MR	No	No	—	0.080 mg/L	—	Resolved	Aug 8, 2014	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2014	Aug 31, 2014	TTHM	MR	No	No	—	0.080 mg/L	—	Resolved	Aug 8, 2014	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	May 7, 2014	Nitrate Rule
Jan 1, 2014	Dec 31, 2014	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	May 7, 2014	Nitrate Rule
Jun 1, 2013	Jun 30, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2013	Total Coliform Rule
Jun 1, 2013	Jun 30, 2013	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Jun 30, 2013	Total Coliform Rule
Sep 1, 2012	Nov 30, 2012	TTHM	MR	No	No	—	0.080 mg/L	—	Resolved	Nov 5, 2012	Stage 2 Disinfectants and Disinfection Byproducts Rule
Sep 1, 2012	Nov 30, 2012	TTHM	MR	No	No	—	0.080 mg/L	—	Resolved	Nov 5, 2012	Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2005	Dec 31, 2005	Chromium	MR	No	Yes	—	0.1 mg/L	—	Resolved	Dec 31, 2005	Inorganic Chemicals
Jan 1, 2005	Dec 31, 2005	CYANIDE	MR	No	Yes	—	0.2 mg/L	—	Resolved	Dec 31, 2005	Inorganic Chemicals
Jan 1, 2005	Dec 31, 2005	CYANIDE	MR	No	Yes	—	0.2 mg/L	—	Resolved	Dec 31, 2005	Inorganic Chemicals
Jan 1, 2005	Dec 31, 2005	CYANIDE	MR	No	Yes	—	0.2 mg/L	—	Resolved	Dec 31, 2005	Inorganic Chemicals
Jan 1, 2005	Dec 31, 2005	Chromium	MR	No	Yes	—	0.1 mg/L	—	Resolved	Dec 31, 2005	Inorganic Chemicals
Jan 1, 2005	Dec 31, 2005	Chromium	MR	No	Yes	—	0.1 mg/L	—	Resolved	Dec 31, 2005	Inorganic Chemicals
Apr 1, 1998	Jun 30, 1998	Styrene	MR	No	Yes	—	0.1 mg/L	—	Resolved	Jun 30, 1998	Volatile Organic Chemicals
Apr 1, 1998	Jun 30, 1998	Tetrachloroethylene	MR	No	Yes	—	0.005 mg/L	—	Resolved	Jun 30, 1998	Volatile Organic Chemicals
Apr 1, 1998	Jun 30, 1998	1,2-Dichloropropane	MR	No	Yes	—	0.005 mg/L	—	Resolved	Jun 30, 1998	Volatile Organic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

Browse All Water Systems Water Safety Stats Water Safety Home

Browse All Water Systems Water Systems in New Jersey