Groundwater Rule (GWR) violations in New Jersey
19 active public water systems in New Jersey had a Groundwater Rule (GWR) violation in the past three years, 3 of them in the latest quarter of EPA's data. What Groundwater Rule (GWR) is and why it matters.
Systems with a Groundwater Rule (GWR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hardyston Twp Mua Hardyston Twp · Sussex County |
769 | 4 | 2 | |
|
Red Horse Shoppes Clinton Twp · Hunterdon County |
136 | 3 | 3 | |
|
57 Old Turnpike LLC Tewksbury Twp · Hunterdon County |
111 | 2 | 2 | |
|
Fair Lawn Water Dept Fair Lawn Boro · Bergen County |
35,564 | 3 | 0 | |
|
Clinton Water Dept Clinton Town · Hunterdon County |
12,500 | 2 | 1 | |
|
Branchville W Dept Branchville Boro · Sussex County |
1,500 | 2 | 1 | |
|
Stillwater Water District 1 Stillwater Twp · Sussex County |
1,200 | 10 | 1 | |
|
Great Divide Campground Green Twp · Sussex County |
408 | 1 | 0 | |
|
Aqua NJ Byram Byram Twp · Sussex County |
400 | 3 | 1 | |
|
Great Divide Campground Green Twp · Sussex County |
175 | 1 | 0 | |
|
Fairview Lake YMCA Camp Stillwater Twp · Sussex County |
160 | 1 | 0 | |
|
Great Divide Campground Green Twp · Sussex County |
150 | 1 | 0 | |
|
Bancroft Neuro Health Center Upper Pittsgrove Twp · Salem County |
142 | 2 | 0 | |
|
First Hope Bank Blairstown Twp · Warren County |
127 | 2 | 0 | |
|
Signature Care Home @ Montville Montville Twp · Morris County |
46 | 3 | 1 | |
|
Dogwood Drive Realty LLC Clinton Twp · Hunterdon County |
44 | 2 | 0 | |
|
Aqua NJ Harkers Hollow Harmony Twp · Warren County |
40 | 2 | 1 | |
|
Newton Moose Lodge 432 Fredon Twp · Sussex County |
39 | 2 | 0 | |
|
G20 Technologies LLC Phillipsburg Town · Warren County |
26 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Groundwater Rule (GWR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Groundwater Rule (GWR) 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.