New Jersey · population 14,750
Lead pipes in Hopatcong, NJ
14 lead or galvanized lines to replace
Most of Hopatcong (population 14,750) gets its water from Hopatcong Water Dept. That system reported 7 lead and 7 galvanized-requiring-replacement service lines out of 2,176, with 1,624 more of unknown material.
0.6% of Hopatcong Water Dept's service lines are lead or galvanized requiring replacement, lower than the New Jersey average (4.5%) and lower than the national average (3.1%).
- Lead 0.3%
- Galvanized (replace) 0.3%
- Unknown 75%
- Non-lead 25%
Latest lead test for Hopatcong Water Dept (Jan 2026–Jun 2026): 9.4 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015, 1 still open for Hopatcong Water Dept.
Water systems serving Hopatcong
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Hopatcong Water DeptMain system | 7 | 7 | 1,624 | 0.6% |
| Mount Arlington Boro DPW MainServes nearby areas | 0 | 0 | 4 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Hopatcong
The counts above cover the whole water system. To see whether your line is lead, look up your address on Hopatcong Water Dept's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Mount Arlingtonno lead reported
- Stanhope17 lead + galv. lines
- Netcong45 lead + galv. lines
- Wharton150 lead + galv. lines
- Dover314 lead + galv. lines
- Victory Gardens314 lead + galv. lines
- Rockaway6 lead + galv. lines
- Ogdensburg841 unknown
Check another water system
Questions
Does Hopatcong, NJ have lead pipes?
Yes. Hopatcong Water Dept, which serves Hopatcong, reported 7 lead and 7 galvanized-requiring-replacement service lines, plus 1,624 of unknown material.
Who supplies water to Hopatcong?
EPA's service area maps place most of Hopatcong in Hopatcong Water Dept's service area (PWSID NJ1912001). Mount Arlington Boro DPW Main also serves parts of the city or nearby areas.
How do I check whether my Hopatcong home has a lead service line?
Search your address on Hopatcong Water Dept's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Hopatcong be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Hopatcong Water Dept whether your street is scheduled and whether it covers the private side.