Public water system · NJ2121001
ActiveNj American Water - Washington/Oxford
At a glance
Nj American Water - Washington/Oxford (PWSID NJ2121001) is an active community water system in Warren County, New Jersey. It reports serving 10,719 people through 4,154 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
10,719
Service connections
4,154
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Nj American Water - Washington/Oxford compare with other water systems in Warren County?
By EPA's size categories, Nj American Water - Washington/Oxford is a large system (10,001 to 100,000 people). Warren County has 219 active public water systems, and Nj American Water - Washington/Oxford is the 4th-largest of them by population served. Its population served is about 7.2 times the county average of 1,491 people per system, and accounts for 3.3% of the 326,592 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 Nj American Water - Washington/Oxford is about 60% 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 Nj American Water - Washington/Oxford?
EPA lists Nj American Water - Washington/Oxford 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. 177 of the 219 active systems in Warren County (81%) are also privately owned.
Does Nj American Water - Washington/Oxford 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 2024. The violations listed here began between January 2009 and October 2024. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2024-02-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbon tetrachloridecode 2982 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dichloromethanecode 2964 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,1-Trichloroethanecode 2981 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1,2-Trichloroethanecode 2985 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | 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.
Nj American Water - Washington/Oxford: frequently asked questions
Who runs Nj American Water - Washington/Oxford?
Nj American Water - Washington/Oxford (PWSID NJ2121001) is a community water system privately owned. It is regulated by the NJ state drinking water program.
How many people does Nj American Water - Washington/Oxford serve?
Nj American Water - Washington/Oxford reports serving 10,719 people through 4,154 service connections in Warren County, New Jersey.
Where does Nj American Water - Washington/Oxford 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 Nj American Water - Washington/Oxford 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 2024. 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 Nj American Water - Washington/Oxford'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 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the NJ state drinking water program.
Where can I find Nj American Water - Washington/Oxford's water quality report?
As a community water system, Nj American Water - Washington/Oxford 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 Warren County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Nj American Water - Short Hills | Warren + 6 more | 217,230 | Community | Surface water |
| Aqua Nj - Phillipsburg | Warren | 26,686 | Community | Groundwater under influence of surface water |
| Hackettstown Mua | Warren | 22,000 | Community | Groundwater |
| Allamuchy Twp Water & Sewer | Warren | 5,423 | Community | Groundwater |
| Nj American Water - Belvidere | Warren | 2,854 | Community | Groundwater |
| Alpha Municipal Water Works | Warren | 2,530 | 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, “Nj American Water - Washington/Oxford, PWSID NJ2121001, New Jersey”, https://aquacensus.com/water-systems/new-jersey/nj-american-water-washington-oxford-nj2121001 (data as of October 1, 2026).