Public water system · NJ1438003
ActiveWashington Twp Mua-Hager
At a glance
Washington Twp Mua-Hager (PWSID NJ1438003) is an active community water system serving Hunterdon and Morris counties, New Jersey. It reports serving 3,458 people through 1,055 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 January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,458
Service connections
1,055
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Washington Twp Mua-Hager compare with other water systems in New Jersey?
By EPA's size categories, Washington Twp Mua-Hager is a medium system (3,301 to 10,000 people). 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 Washington Twp Mua-Hager is about half of 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 Washington Twp Mua-Hager?
EPA lists Washington Twp Mua-Hager 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.
Does Washington Twp Mua-Hager have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. The violations listed here began between April 2019 and January 2026. By type: 8 monitoring and reporting, 2 reporting and 2 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (4 of them). EPA lists 5 as archived, 5 as resolved and 2 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-01-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Archived |
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-12-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2025-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Archived |
| 2025-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Archived |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2023-12-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2023-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2023-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | No | Resolved |
| 2019-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dibromo-3-chloropropane (DBCP)code 2931 | No | Resolved |
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.
Washington Twp Mua-Hager: frequently asked questions
Who runs Washington Twp Mua-Hager?
Washington Twp Mua-Hager (PWSID NJ1438003) is a community water system owned by a local government. It is regulated by the NJ state drinking water program.
How many people does Washington Twp Mua-Hager serve?
Washington Twp Mua-Hager reports serving 3,458 people through 1,055 service connections in Hunterdon and Morris counties, New Jersey.
Where does Washington Twp Mua-Hager 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 Washington Twp Mua-Hager 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 January 2026. 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 Washington Twp Mua-Hager'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 January 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the NJ state drinking water program.
Where can I find Washington Twp Mua-Hager's water quality report?
As a community water system, Washington Twp Mua-Hager 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 Hunterdon County(the first county EPA lists for this system)
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Clinton Water Dept | Hunterdon | 12,500 | Community | Groundwater |
| Flemington Water Department | Hunterdon | 4,581 | Community | Groundwater |
| Veolia Water New Jersey Lambertville | Hunterdon | 3,960 | Community | Surface water |
| High Bridge W Dept | Hunterdon | 3,300 | Community | Groundwater |
| State of Nj Spruce Run Recreat | Hunterdon | 2,800 | Transient non-community | Groundwater |
| Glen Gardner W Dept | Hunterdon | 1,705 | 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, “Washington Twp Mua-Hager, PWSID NJ1438003, New Jersey”, https://aquacensus.com/water-systems/new-jersey/washington-twp-mua-hager-nj1438003 (data as of October 1, 2026).