Chlorine (MRDL) violations in New Jersey
112 active public water systems in New Jersey had a Chlorine (MRDL) violation in the past three years, 18 of them in the latest quarter of EPA's data. What Chlorine (MRDL) is and why it matters.
Health effects: Acute high-dose exposure to chlorinated water can cause eye and nose irritation, stomach discomfort, and nausea. Chronic exposure above the MRDL is primarily a concern because elevated chlorine accelerates formation of trihalomethanes and haloacetic acids, which are associated with increased cancer risk over time.
Systems with a Chlorine (MRDL) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
HO HO Kus Water Dept Hohokus Boro · Bergen County |
4,060 | 2 | 1 | |
|
Mountain Lakes Water Dep Boonton Twp, Denville Twp, Mountain Lakes Boro and 1 more · Morris County |
4,012 | 4 | 1 | |
|
Stanhope W Dept Stanhope Boro · Sussex County |
3,730 | 5 | 0 | |
|
MT Olive Village Green Water System Mount Olive Twp · Morris County |
3,600 | 6 | 3 | |
|
Washington Twp Mua-Hager Tewksbury Twp, Washington Twp · Hunterdon County |
3,458 | 3 | 1 | |
|
Swedesboro Water Department Swedesboro Boro · Gloucester County |
2,824 | 2 | 1 | |
|
Englewood Hospital Englewood City · Bergen County |
2,600 | 5 | 0 | |
|
Pennington W Dept Pennington Boro · Mercer County |
2,600 | 3 | 2 | |
|
East Newark W Dept East Newark Boro · Hudson County |
2,406 | 1 | 0 | |
|
Brooklawn Water Departme Brooklawn Boro · Camden County |
2,300 | 3 | 0 | |
|
Sussex W Dept Sussex Boro · Sussex County |
2,201 | 4 | 2 | |
|
Mount Arlington Boro Dpw Main Mount Arlington Boro · Morris County |
1,978 | 4 | 1 | |
|
MT Olive High School Mount Olive Twp · Morris County |
1,795 | 3 | 1 | |
|
Pemberton Borough Water Pemberton Boro · Burlington County |
1,771 | 2 | 0 | |
|
Pemberton Twp High School New Side Pemberton Twp · Burlington County |
1,580 | 4 | 0 | |
|
Pemberton Twp High School Old Side Pemberton Twp · Burlington County |
1,580 | 4 | 1 | |
|
Rolling Hills/lounsberry Hollow School Vernon Twp · Sussex County |
1,455 | 2 | 1 | |
|
Forest Lakes Water Byram Twp · Sussex County |
1,410 | 1 | 0 | |
|
Byram Lakes Elem School Byram Twp · Sussex County |
1,265 | 3 | 1 | |
|
Lawrenceville School Lawrence Twp · Mercer County |
1,200 | 2 | 1 | |
|
Morris Chase/morris Hunt Pcws Mount Olive Twp · Morris County |
1,080 | 7 | 1 | |
|
Pemberton Early Childhood Center Pemberton Twp · Burlington County |
920 | 4 | 0 | |
|
Mercer County Correctional Center Hopewell Twp.1106- · Mercer County |
860 | 5 | 1 | |
|
Helen a Fort Middle School Pemberton Twp · Burlington County |
837 | 3 | 1 | |
|
Manalapan Twp WD Tracy Station Manalapan Twp · Monmouth County |
800 | 1 | 0 | |
|
Mount Olive Twp W D Sand Mount Olive Twp · Morris County |
744 | 5 | 1 | |
|
West Milford Shopping Center West Milford Twp · Passaic County |
725 | 2 | 0 | |
|
MT Olive Twp WD Pinecrest Mount Olive Twp · Morris County |
648 | 7 | 1 | |
|
MT Olive Twp Tinc Farm Mount Olive Twp · Morris County |
597 | 8 | 1 | |
|
Our Lady of the Magnificat Kinnelon Boro · Morris County |
506 | 4 | 0 | |
|
Evergreen Estates Fairfield Twp · Cumberland County |
450 | 3 | 1 | |
|
Newcomb Middle School Pemberton Twp · Burlington County |
412 | 5 | 2 | |
|
Country View Village, LLC White Twp · Warren County |
310 | 4 | 1 | |
|
Aqua NJ California Village North Hanover Twp · Burlington County |
300 | 4 | 1 | |
|
Hillside Estates at Franklin Franklin Boro · Sussex County |
300 | 4 | 1 | |
|
Lake Stockholm INC Hardyston Twp · Sussex County |
300 | 4 | 1 | |
|
Aberdeen Freneau Aberdeen Twp · Monmouth County |
286 | 3 | 1 | |
|
Aqua NJ Hanover Mobile Village North Hanover Twp · Burlington County |
285 | 4 | 2 | |
|
Mount Olive W.d. Goldmine System Mount Olive Twp · Morris County |
267 | 5 | 2 | |
|
MT Olive Carlton Hills Water System Mount Olive Twp · Morris County |
267 | 5 | 2 | |
|
Big Oak Rehab Pittsgrove Twp · Salem County |
259 | 5 | 0 | |
|
Mohawk Meadows Andover Twp · Sussex County |
250 | 6 | 2 | |
|
Grande Woods North MHP Middle Twp · Cape May County |
200 | 4 | 2 | |
|
Hilltop Mobile Village Pemberton Twp · Burlington County |
200 | 3 | 2 | |
|
Kessler Institute for Rehab Chester Twp · Morris County |
200 | 3 | 0 | |
|
Hidden Village Condo Association Vernon Twp · Sussex County |
175 | 4 | 1 | |
|
Mullica Woods Mobile Home Park Mullica Twp · Atlantic County |
150 | 4 | 0 | |
|
Wonder Lake Properties I West Milford Twp · Passaic County |
105 | 3 | 1 | |
|
Harrisonville Mobile Home Park South Harrison Twp · Gloucester County |
100 | 4 | 2 | |
|
Hopewell Place Senior Apts Hopewell Twp · Cumberland County |
100 | 6 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New Jersey records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.