Surface Water Treatment Rule (SWTR) violations in New Jersey
55 active public water systems in New Jersey had a Surface Water Treatment Rule (SWTR) violation in the past three years, 6 of them in the latest quarter of EPA's data. What Surface Water Treatment Rule (SWTR) is and why it matters.
Health effects: Without proper filtration/disinfection: Giardia lamblia (severe diarrhea, cramping), Cryptosporidium (life-threatening for immunocompromised individuals), viruses (hepatitis A, norovirus). Turbidity itself is not a health risk but can shield pathogens from disinfection.
Systems with a Surface Water Treatment Rule (SWTR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Belleville Water Dept Belleville Town · Essex County |
35,129 | 5 | 2 | |
|
Jbmdl-Dix Main System New Hanover Twp · Burlington County |
12,765 | 3 | 0 | |
|
Ancora Psychiatric Hospi Winslow Twp · Camden County |
2,506 | 5 | 0 | |
|
Helmetta Water Dept Helmetta Boro · Middlesex County |
2,000 | 3 | 0 | |
|
The Chemours Company FC LLC Pennsville Twp · Salem County |
490 | 4 | 1 | |
|
Lincoln Park Jacksonville Syst Lincoln Park Boro · Morris County |
300 | 4 | 2 | |
|
Jersey City Mua Jersey City · Hudson County |
262,000 | 1 | 0 | |
|
NJ American Water Short Hills Bedminster Twp, Belvidere Town, Berkeley Heights Twp and 26 more · Essex County |
217,230 | 1 | 0 | |
|
Trenton Water Works Ewing Twp, Hamilton Twp, Hopewell Twp.1106- and 2 more · Mercer County |
217,000 | 8 | 2 | |
|
East Orange Water Commission East Orange City · Essex County |
75,000 | 6 | 1 | |
|
Southeast Morris County Mua Chatham Boro, Hanover Twp, Harding Twp and 4 more · Morris County |
62,349 | 1 | 0 | |
|
Ridgewood Water Ridgewood Twp · Bergen County |
61,700 | 6 | 2 | |
|
New Brunswick W Dept New Brunswick City · Middlesex County |
55,000 | 4 | 0 | |
|
Bloomfield Water Department Bloomfield Town · Essex County |
53,315 | 5 | 0 | |
|
Merchantville Pennsauken Camden City, Cherry Hill Twp, Merchantville Boro and 1 more · Camden County |
47,144 | 4 | 0 | |
|
Sayreville W Dept Sayreville Boro · Middlesex County |
45,345 | 2 | 0 | |
|
Winslow Twp Dmu Winslow Twp · Camden County |
39,174 | 6 | 0 | |
|
Fair Lawn Water Dept Fair Lawn Boro · Bergen County |
35,564 | 3 | 0 | |
|
Deptford Twp Mua Deptford Twp · Gloucester County |
30,561 | 2 | 0 | |
|
Orange Water Dept Orange City · Essex County |
30,134 | 6 | 2 | |
|
Livingston Twp Div of Water Livingston Twp · Essex County |
27,391 | 4 | 0 | |
|
Aqua NJ Phillipsburg Phillipsburg Town · Warren County |
26,686 | 2 | 0 | |
|
Monroe Municipal Utilities Authority Monroe Twp · Gloucester County |
26,179 | 3 | 0 | |
|
Glassboro Water Department Glassboro Boro · Gloucester County |
24,244 | 3 | 2 | |
|
Montville Twp Mua Montville Twp · Morris County |
22,000 | 1 | 0 | |
|
Elmwood Park Water Dept Elmwood Park Boro · Bergen County |
20,374 | 4 | 2 | |
|
Belmar Water Dept Belmar Boro · Monmouth County |
20,000 | 6 | 0 | |
|
Point Pleasant Water Department Point Pleasant Boro · Ocean County |
19,600 | 6 | 0 | |
|
South River W Dept South River Boro · Middlesex County |
16,000 | 6 | 2 | |
|
NJ American Water Penns Grove Carney's Point Twp, Oldmans Twp, Penns Grove Boro · Salem County |
14,406 | 2 | 0 | |
|
Saddle Brook Water Dept Saddle Brook Twp · Bergen County |
13,155 | 2 | 1 | |
|
Manchester Utilities Authority Haledon Boro · Passaic County |
12,000 | 2 | 0 | |
|
Haddon Twp Water Departm Haddon Twp · Camden County |
11,938 | 3 | 0 | |
|
Wallington Water Dept Wallington Boro · Bergen County |
11,583 | 5 | 3 | |
|
Lincoln Park Water Dept Lincoln Park Boro · Morris County |
11,000 | 4 | 1 | |
|
Totowa W Dept Totowa Boro · Passaic County |
10,804 | 4 | 1 | |
|
West Caldwell Water Department West Caldwell Boro · Essex County |
10,759 | 5 | 0 | |
|
Wanaque W Dept. Ringwood Boro, Wanaque Boro · Passaic County |
10,266 | 5 | 1 | |
|
Ringwood Water Department Ringwood Boro · Passaic County |
9,327 | 6 | 3 | |
|
Caldwell Water Dept Caldwell Boro · Essex County |
9,027 | 4 | 2 | |
|
Bloomingdale Water Dept Bloomingdale Boro · Passaic County |
7,742 | 2 | 0 | |
|
Butler Water Dept Bloomingdale Boro, Butler Boro, Kinnelon Boro and 1 more · Morris County |
7,630 | 3 | 0 | |
|
Milltown W Dept East Brunswick Twp, Milltown Boro, North Brunswick Twp · Middlesex County |
7,000 | 4 | 0 | |
|
Aberdeen Cliffwood/cliffwood Beach Aberdeen Twp · Monmouth County |
6,775 | 3 | 1 | |
|
North Caldwell Water Dep North Caldwell Boro · Essex County |
6,000 | 3 | 0 | |
|
Roseland Water Dept Roseland Boro · Essex County |
5,300 | 3 | 0 | |
|
Veolia Water New Jersey Lambertville Lambertville City · Hunterdon County |
3,960 | 1 | 0 | |
|
National Park Water Department National Park Boro · Gloucester County |
3,144 | 2 | 1 | |
|
Sussex W Dept Sussex Boro · Sussex County |
2,201 | 4 | 2 | |
|
Aberdeen High School/oakshade Area Aberdeen Twp · Monmouth County |
2,123 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Surface Water Treatment Rule (SWTR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Surface Water Treatment Rule (SWTR) 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.