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Water system · PWSID NJ1414011

JEFFERSON TWP W U LK HOP

LAKE HOPATCONG, NJ · ~8,500 people served

Check your exact address → LAKE HOPATCONG overview
44
Action needed
PurityRadar safety score

PWSID

NJ1414011

State

New Jersey

City

LAKE HOPATCONG

Population served

8,500

Primary source

Groundwater

Score history

▼ 56 points — the score moved from 100 to 44 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 44

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Aug 2025). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

9.8 ppt

limit 4 ppt

Above EPA limit · 2.4×

PFOA

Perfluorooctanoic acid

6.4 ppt

limit 4 ppt

Above EPA limit · 1.6×

PFPeA

7.6 ppt

limit —

No federal limit

PFBS

7 ppt

limit —

No federal limit

PFHxA

3.6 ppt

limit —

No federal limit

Violations & enforcement

124

Violations on record

1

Unaddressed

10

Health-based

175

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2025. Official EPA record →

Reporting · Lead & Copper Rule began Dec 2024 Unaddressed
Reporting · Lead & Copper Rule began Oct 2025 Resolved
Monitoring · Lead & Copper Rule began Sep 2025 Resolved
Reporting · Lead & Copper Rule began Jul 2025 Resolved
Other · EPA contaminant 7500 began Jun 2025 Resolved
Monitoring · Lead & Copper Rule began Jun 2025 Resolved
Treatment technique · Lead & Copper Rule health-based began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jul 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jun 2024 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jun 2024 Resolved
Other · EPA contaminant 7500 began May 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Mar 2024 Resolved

Recent enforcement actions

  • State action · SOX Oct 2025
  • State action · SFJ Oct 2025
  • State action · SFJ Oct 2025
  • State action · SOX Sep 2025
  • State action · SOX Aug 2025
  • State action · SFJ Jul 2025
  • State action · SFJ Jul 2025
  • State action · SOX Jul 2025

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Manganese

1 station · latest Aug 2022

143 · max 143 ug/l · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system NJ1414011 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.