Lake Hopatcong, NJ
Contamination score
Higher = more contaminated vs. other cities.
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Reported illness & cancer claims
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Self-reported issues
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Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
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Public water systems
Jefferson Twp W U Lk Hop
- PWSID:
- NJ1414011
- Source:
- Ground water
- Serves:
- 8,500 people
EPA & DEP violations
Jefferson Twp W U Lk Hop
PWSID NJ141401114 violationsRevised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Oct 11, 2025 · 10 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Sep 1, 2025 · 11 months ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Jul 11, 2025 · 1 year ago · Source ↗
Lead and Copper Rule — MR violation
medium severityArchivedLead and Copper Rule MR violation (Archived).
EPA SDWIS · MR · Began Jul 1, 2025 · 1 year ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Jun 21, 2025 · 1 year ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Jun 1, 2025 · 1 year ago · Source ↗
Lead and Copper Rule — MR violation
medium severityArchivedLead and Copper Rule MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
cis-1,2-Dichloroethylene — MR violation
medium severityArchivedcis-1,2-Dichloroethylene MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Xylenes, Total — MR violation
medium severityArchivedXylenes, Total MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
DICHLOROMETHANE — MR violation
medium severityArchivedDICHLOROMETHANE MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
p-Dichlorobenzene — MR violation
medium severityArchivedp-Dichlorobenzene MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
trans-1,2-Dichloroethylene — MR violation
medium severityArchivedtrans-1,2-Dichloroethylene MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Carbon tetrachloride — MR violation
medium severityArchivedCarbon tetrachloride MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
1,1,2-Trichloroethane — MR violation
medium severityArchived1,1,2-Trichloroethane MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2025 · 1 year ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.