Public water system · ARN000046
ActiveNat Ctr for Toxicological Res
At a glance
Nat Ctr for Toxicological Res (PWSID ARN000046) is an active non-transient non-community water system in Jefferson County, Arkansas. It reports serving 600 people through 88 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
88
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Nat Ctr for Toxicological Res compare with other water systems in Jefferson County?
By EPA's size categories, Nat Ctr for Toxicological Res is a small system (501 to 3,300 people). Jefferson County has 12 active public water systems. Its population served is well below the county average of 5,499 people per system, and accounts for 0.9% of the 65,986 people reported by systems filed under the county. Across Arkansas, the 853 active systems average 3,592 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Nat Ctr for Toxicological Res is about 40% above that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Arkansas has 29 active non-transient non-community water systems, 3.4% of the state's 853 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 461 Arkansas systems (54%) list groundwater as their primary source.
Who owns and regulates Nat Ctr for Toxicological Res?
EPA lists Nat Ctr for Toxicological Res as privately owned. The AR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 12 active systems in Jefferson County (17%) are also privately owned.
Does Nat Ctr for Toxicological Res have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2019. The violations listed here began between March 2017 and October 2019. By type: 2 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2019-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2017-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 3 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.
Nat Ctr for Toxicological Res: frequently asked questions
Who runs Nat Ctr for Toxicological Res?
Nat Ctr for Toxicological Res (PWSID ARN000046) is a non-transient non-community water system privately owned. It is regulated by the AR state drinking water program.
How many people does Nat Ctr for Toxicological Res serve?
Nat Ctr for Toxicological Res reports serving 600 people through 88 service connections in Jefferson County, Arkansas.
Where does Nat Ctr for Toxicological Res 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 Nat Ctr for Toxicological Res have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2019. 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 Nat Ctr for Toxicological Res' 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 3 violations for this system; none is health-based, and the most recent began in October 2019. For current results, consult EPA ECHO, or the AR state drinking water program.
Where can I find Nat Ctr for Toxicological Res' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Nat Ctr for Toxicological Res is a non-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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Liberty Utilities | Jefferson | 43,438 | Community | Groundwater |
| Watson Chapel Water Assoc | Jefferson | 5,590 | Community | Groundwater |
| Hardin Water Association | Jefferson | 4,600 | Community | Purchased groundwater |
| Redfield Waterworks | Jefferson | 2,823 | Community | Groundwater |
| Jefferson Public Water Authority | Jefferson | 2,551 | Community | Groundwater |
| Adc - Tucker Unit Maint | Jefferson | 2,000 | 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, “Nat Ctr for Toxicological Res, PWSID ARN000046, Arkansas”, https://aquacensus.com/water-systems/arkansas/nat-ctr-for-toxicological-res-arn000046 (data as of October 1, 2026).