PlainWater
States → New Jersey

JEFFERSON TWP W VASSAR ROAD

PWS ID: NJ1414016 · LAKE HOPATCONG, New Jersey 07849

JEFFERSON TWP W VASSAR ROAD serves 90 people in LAKE HOPATCONG, New Jersey using Groundwater water sources. It has 404 recorded EPA violations, including 3 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: JEFFERSON TWP W VASSAR ROAD

JEFFERSON TWP W VASSAR ROAD is a private-owned community water system that delivers drinking water to 90 residents in LAKE HOPATCONG, New Jersey (Morris County) through 24 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 404 total violations for this system , of which 3 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 375 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 199 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across New Jersey, EPA tracks 3,428 public water systems serving 9,570,926 people, with 204,988 cumulative violations and 22,229 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 59.8 violations. JEFFERSON TWP W VASSAR ROAD's 404 violations sit above the New Jersey average. Statewide, 208 of 264 UCMR5-tested systems have reported PFAS detections (78.8%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
90
Total Violations
404
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
24
County
Morris
School/Daycare
No
MCL Violations
3
Monitoring Violations
375
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 199 2014
Chlorine MR 25 2023
Nitrate MR 20 2005
Consumer Confidence Rule Other 12 2024
Cadmium MR 11 2008
Chromium MR 11 2008
Fluoride MR 11 2008
Selenium MR 11 2008
Mercury MR 11 2008
Arsenic MR 11 2008
Barium MR 11 2008
CYANIDE MR 8 2008
Nickel MR 8 2008
Beryllium, Total MR 8 2008
Thallium, Total MR 8 2008
Antimony, Total MR 8 2008
Lead and Copper Rule MR 6 2023
Revised Total Coliform Rule RPT 4 2020
Revised Total Coliform Rule MON 3 2018
E. COLI MR 3 2019
Coliform (TCR) MCL 3 2011
1,1-Dichloroethylene MR 2 2017
Revised Total Coliform Rule Other 1 2018

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for JEFFERSON TWP W VASSAR ROAD.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NJ1414016 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

New Jersey Drinking Water Authority

NJ DEP — Bureau of Safe Drinking Water is the primacy agency that licenses and inspects JEFFERSON TWP W VASSAR ROAD under EPA-delegated authority.

Open NJ regulator portal

Source: NJ DEP — Bureau of Safe Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2024 Consumer Confidence Rule Other 12 SDWIS / NJ1414016 / 7000
2023 Chlorine MR 25 SDWIS / NJ1414016 / 0999
2023 Lead and Copper Rule MR 6 SDWIS / NJ1414016 / 5000
2020 Revised Total Coliform Rule RPT 4 SDWIS / NJ1414016 / 8000
2019 E. COLI MR 3 SDWIS / NJ1414016 / 3014
2018 Revised Total Coliform Rule MON 3 SDWIS / NJ1414016 / 8000
2018 Revised Total Coliform Rule Other 1 SDWIS / NJ1414016 / 8000
2017 1,1-Dichloroethylene MR 2 SDWIS / NJ1414016 / 2977
2014 Coliform (TCR) MR 199 SDWIS / NJ1414016 / 3100
2011 Coliform (TCR) MCL 3 SDWIS / NJ1414016 / 3100
2008 Cadmium MR 11 SDWIS / NJ1414016 / 1015
2008 Chromium MR 11 SDWIS / NJ1414016 / 1020
2008 Fluoride MR 11 SDWIS / NJ1414016 / 1025
2008 Selenium MR 11 SDWIS / NJ1414016 / 1045
2008 Mercury MR 11 SDWIS / NJ1414016 / 1035

How JEFFERSON TWP W VASSAR ROAD Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric JEFFERSON TWP W VASSAR ROAD New Jersey avg Federal benchmark
Total violations 404 59.8 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 3 6.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 78.8% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 90 2,792 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 3,428 regulated public water systems in New Jersey.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is JEFFERSON TWP W VASSAR ROAD water safe to drink? ▼
JEFFERSON TWP W VASSAR ROAD (PWS ID: NJ1414016) has 404 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 90 people using Groundwater sources.
How many people does JEFFERSON TWP W VASSAR ROAD serve? ▼
JEFFERSON TWP W VASSAR ROAD serves 90 people in LAKE HOPATCONG, New Jersey. It is a Private-owned system using Groundwater water sources with 24 service connections.
What type of violations does JEFFERSON TWP W VASSAR ROAD have? ▼
JEFFERSON TWP W VASSAR ROAD has 404 total violations: 3 health-based violations (MCL exceedances or treatment failures), 375 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in JEFFERSON TWP W VASSAR ROAD water? ▼
No PFAS testing data is available for JEFFERSON TWP W VASSAR ROAD under the EPA's UCMR5 monitoring program.
What water source does JEFFERSON TWP W VASSAR ROAD use? ▼
JEFFERSON TWP W VASSAR ROAD uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

Explore PlainWater

Water in New Jersey

All systems in state
All States

Water quality by state
Contaminants

PFAS & other pollutants
Guides

Understanding water quality

Related Data for New Jersey

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial