Water quality in Lake Hopatcong, New Jersey
Lake Hopatcong is in Morris County. 307 active public water systems serve the county; 190 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Morris County
63 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Roxbury Twp W Dept-Evergreen Roxbury Twp |
90 | 0 | 2.9 mi | |
| Mount Arlington Dpw Kadel Sys Mount Arlington Boro |
1,053 | 3 | 3.0 mi | |
| Awo&m Picatinny Arsenal Rockaway Twp |
6,011 | 0 | 3.4 mi | |
| Mount Arlington Boro Dpw Main Mount Arlington Boro |
1,978 | 4 | 3.4 mi | |
| Roxbury Twp W Dept-Shore Roxbury Twp |
5,153 | 2 | 4.3 mi | |
| Wharton Water Dept Mine Hill Twp, Wharton Boro |
6,342 | 1 | 4.4 mi | |
| Veolia Water New Jersey Arlington Hills Mount Arlington Boro |
1,989 | 0 | 4.5 mi | |
| Rockaway Twp Water Dept Rockaway Twp |
14,000 | 5 | 5.1 mi | |
| Hoffman Homes Rockaway Twp |
120 | 2 | 5.4 mi | |
| Mine Hill Twp Water Dept Mine Hill Twp |
4,300 | 3 | 5.6 mi | |
| NJ American Water Roxbury Roxbury Twp |
11,793 | 0 | 6.0 mi | |
| Dover Water Commission Dover Town |
27,806 | 6 | 6.0 mi | |
| Roxbury Twp W Dept-Sky V Roxbury Twp |
4,478 | 2 | 6.4 mi | |
| Rockaway Boro Water Dept Denville Twp, Rockaway Boro, Rockaway Twp |
7,066 | 2 | 6.4 mi | |
| Netcong Water Dept Netcong Boro |
3,342 | 2 | 6.5 mi | |
| Oak Ridge Mobile Home Park Jefferson Twp |
100 | 1 | 6.6 mi | |
| Jefferson Twp W U Milton Sys Jefferson Twp |
4,500 | 4 | 6.8 mi | |
| NJ American Water Itc Mount Olive Twp |
6,463 | 0 | 7.3 mi | |
| Loziers Trailer Park Jefferson Twp |
50 | 2 | 7.4 mi | |
| MT Olive Village Green Water System Mount Olive Twp |
3,600 | 6 | 7.9 mi | |
| Denville Twp Water Dept Denville Twp |
15,881 | 3 | 8.0 mi | |
| Randolph Twp Public Works Dept Randolph Twp |
14,820 | 0 | 8.3 mi | |
| Morris Chase/morris Hunt Pcws Mount Olive Twp |
1,080 | 7 | 8.3 mi | |
| MT Olive Carlton Hills Water System Mount Olive Twp |
267 | 5 | 8.5 mi | |
| Morris County Mua Randolph Twp |
0 | 1 | 8.7 mi |
Non-community systems in Morris County (243: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
B & J Market Jefferson Twp |
602 | 0 | 0 | |
|
Skyland Medical Group, P.a. Jefferson Twp |
84 | 1 | 0 | |
|
Wendys Old Fashioned Hamburger Jefferson Twp |
258 | 2 | 2 | |
|
#45 South Plaza Phase #1 Jefferson Twp |
199 | 5 | 0 | |
|
Jefferson Dairy Jefferson Twp |
170 | 1 | 0 | |
|
Little Nicks Jefferson Twp |
25 | 0 | 0 | |
|
Club 15 Jefferson Twp |
51 | 1 | 0 | |
|
Windlass Restaurant & Marina Jefferson Twp |
1,020 | 1 | 0 | |
|
Alices Jefferson Twp |
262 | 2 | 1 | |
|
Speedy Mart Jefferson Twp |
202 | 0 | 0 | |
|
The Roasted Breadfruit Grill Jefferson Twp |
26 | 1 | 1 | |
|
Mason ST Pub Jefferson Twp |
108 | 0 | 0 | |
|
Exxon USA 3-2297 Jefferson Twp |
104 | 2 | 1 | |
|
Chapala Grill 3 Jefferson Twp |
48 | 0 | 0 | |
|
Tap House 15 Jefferson Twp |
220 | 1 | 0 | |
|
Cozy Lake Elementary Jefferson Twp |
530 | 1 | 0 | |
|
Jefferson House Jefferson Twp |
215 | 1 | 0 | |
|
Jefferson Strip Mall Jefferson Twp |
145 | 2 | 0 | |
|
Paul & Christas Diner Jefferson Twp |
103 | 1 | 1 | |
|
Cottage Deli Jefferson Twp |
82 | 1 | 1 | |
|
Mahlon Dickerson Reservation-Rv Jefferson Twp |
25 | 0 | 0 | |
|
Portofinos Jefferson Twp |
87 | 0 | 0 | |
|
Njdot @ Roxbury Corp Center Roxbury Twp |
170 | 3 | 0 | |
|
Exxon USA 3-5390 Mount Arlington Boro |
253 | 3 | 0 | |
|
Asian Landing Garden Roxbury Twp |
50 | 0 | 0 | |
|
Pops Brand LLC Roxbury Twp |
108 | 1 | 0 | |
|
Jefferson Twp High School Jefferson Twp |
1,400 | 1 | 0 | |
|
Jefferson Twp Middle School Jefferson Twp |
900 | 0 | 0 | |
|
Casa Bianca Jefferson Twp |
162 | 3 | 1 | |
|
Jefferson Twp Public Works Jefferson Twp |
100 | 1 | 1 | |
|
Rockaway Twp Garage Rockaway Twp |
70 | 3 | 1 | |
|
Hopatcong State Park Roxbury Twp |
1,200 | 1 | 0 | |
|
Kingtown Diesel Roxbury Twp |
312 | 1 | 0 | |
|
Speedway #3456 Roxbury Twp |
255 | 1 | 1 | |
|
Ihop Kenvil Roxbury Twp |
168 | 0 | 0 | |
|
Prudent Publishing CO Roxbury Twp |
145 | 1 | 0 | |
|
Grace Baptist Church Roxbury Twp |
105 | 0 | 0 | |
|
Reform Temple Shalom Roxbury Twp |
79 | 0 | 0 | |
|
Majestic Business Park Roxbury Twp |
45 | 0 | 0 | |
|
Lakeside Eatery Roxbury Twp |
28 | 2 | 1 | |
|
Nordic Contracting Roxbury Twp |
25 | 0 | 0 | |
|
Port Morris United Meth Roxbury Twp |
31 | 0 | 0 | |
|
Cliffs Dairy Maid INC Roxbury Twp |
103 | 0 | 0 | |
|
Building 1451 LLC Roxbury Twp |
226 | 0 | 0 | |
|
Quality Inn Roxbury Twp |
87 | 0 | 0 | |
|
Tony's Famous Pizzeria Rockaway Twp |
102 | 2 | 0 | |
|
Green Pond Dental Associates Rockaway Twp |
68 | 1 | 0 | |
|
1881 NJ LLC Roxbury Twp |
170 | 3 | 0 | |
|
Roxbury Motel Roxbury Twp |
32 | 0 | 0 | |
|
Berkshire Valley Golf Course Jefferson Twp |
210 | 0 | 0 |
About this data
Water systems are matched to Morris County, nearest to Lake Hopatcong first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
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.