Public water system · NJ1414011
ActiveJefferson Twp W U Lk Hop
At a glance
Jefferson Twp W U Lk Hop (PWSID NJ1414011) is an active community water system in Morris County, New Jersey. It reports serving 8,500 people through 2,490 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
8,500
Service connections
2,490
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Jefferson Twp W U Lk Hop compare with other water systems in Morris County?
By EPA's size categories, Jefferson Twp W U Lk Hop is a medium system (3,301 to 10,000 people). Morris County has 302 active public water systems. Its population served is about 5.7 times the county average of 1,490 people per system, and accounts for 1.9% of the 449,898 people reported by systems filed under the county. Across New Jersey, the 3,496 active systems average 2,750 people each. Nationally, the average active community water system reports serving 6,703 people, so Jefferson Twp W U Lk Hop is about 27% above that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. New Jersey has 582 active community water systems, 17% of the state's 3,496 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,313 New Jersey systems (95%) list groundwater as their primary source.
Who owns and regulates Jefferson Twp W U Lk Hop?
EPA lists Jefferson Twp W U Lk Hop as owned by a local government. The NJ state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 67 of the 302 active systems in Morris County (22%) are also owned by a local government.
Does Jefferson Twp W U Lk Hop have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between January 2025 and October 2025. By type: 7 monitoring and reporting, 2 reporting, 2 monitoring and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 7 as archived and 5 as resolved. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-10-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-07-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Archived |
| 2025-06-21 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toluenecode 2991 | No | Archived |
| 2025-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Archived |
| 2025-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Archived |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Jefferson Twp W U Lk Hop: frequently asked questions
Who runs Jefferson Twp W U Lk Hop?
Jefferson Twp W U Lk Hop (PWSID NJ1414011) is a community water system owned by a local government. It is regulated by the NJ state drinking water program.
How many people does Jefferson Twp W U Lk Hop serve?
Jefferson Twp W U Lk Hop reports serving 8,500 people through 2,490 service connections in Morris County, New Jersey.
Where does Jefferson Twp W U Lk Hop get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Jefferson Twp W U Lk Hop have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Jefferson Twp W U Lk Hop's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the NJ state drinking water program.
Where can I find Jefferson Twp W U Lk Hop's water quality report?
As a community water system, Jefferson Twp W U Lk Hop must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Morris County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Southeast Morris County Mua | Morris | 62,349 | Community | Surface water |
| Parsippany-Troy Hills Water Department | Morris | 50,400 | Community | Purchased surface water |
| Dover Water Commission | Morris | 27,806 | Community | Groundwater |
| Montville Twp Mua | Morris | 22,000 | Community | Purchased surface water |
| Denville Twp Water Dept | Morris | 15,881 | Community | Groundwater |
| Madison Water Dept | Morris | 15,820 | Community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Jefferson Twp W U Lk Hop, PWSID NJ1414011, New Jersey”, https://aquacensus.com/water-systems/new-jersey/jefferson-twp-w-u-lk-hop-nj1414011 (data as of October 1, 2026).