Public water system · NJ1021437
ActiveDiamond Nation
At a glance
Diamond Nation (PWSID NJ1021437) is an active transient non-community water system in Hunterdon County, New Jersey. It reports serving 312 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
312
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Diamond Nation compare with other water systems in Hunterdon County?
By EPA's size categories, Diamond Nation is a very small system (500 people or fewer). Hunterdon County has 293 active public water systems. Its population served is roughly in line with the county average of 313 people per system, and accounts for 0.3% of the 91,772 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 transient non-community water system reports serving 144 people, so Diamond Nation is about twice that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. New Jersey has 2,277 active transient non-community water systems, 65% 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 Diamond Nation?
EPA lists Diamond Nation as privately owned. 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. 229 of the 293 active systems in Hunterdon County (78%) are also privately owned.
Does Diamond Nation have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2025. The violations listed here began between July 2013 and October 2025. By type: 6 monitoring and reporting, 3 reporting and 2 monitoring. The contaminant or rule involved most often is Nitrate (5 of them). EPA lists 11 as resolved. 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2020-04-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-09-11 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-08-01 | MonitoringMonitoring, Additional Routine (RTCR) · code 3B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-20 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2016-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 11 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.
Diamond Nation: frequently asked questions
Who runs Diamond Nation?
Diamond Nation (PWSID NJ1021437) is a transient non-community water system privately owned. It is regulated by the NJ state drinking water program.
How many people does Diamond Nation serve?
Diamond Nation reports serving 312 people through 2 service connections in Hunterdon County, New Jersey.
Where does Diamond Nation 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 Diamond Nation have any drinking water violations?
EPA's records list 11 violations for this system; 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 Diamond Nation'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. EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2025. For current results, consult EPA ECHO, or the NJ state drinking water program.
Where can I find Diamond Nation's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Diamond Nation is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Hunterdon County
| 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 |
| Washington Twp Mua-Hager | Hunterdon + 1 more | 3,458 | Community | Groundwater |
| High Bridge W Dept | Hunterdon | 3,300 | Community | Groundwater |
| State of Nj Spruce Run Recreat | Hunterdon | 2,800 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Diamond Nation, PWSID NJ1021437, New Jersey”, https://aquacensus.com/water-systems/new-jersey/diamond-nation-nj1021437 (data as of October 1, 2026).