Public water system · AR0000421
ActiveMarvell Waterworks
At a glance
Marvell Waterworks (PWSID AR0000421) is an active community water system in Phillips County, Arkansas. It reports serving 1,035 people through 414 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, one is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,035
Service connections
414
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Marvell Waterworks compare with other water systems in Phillips County?
By EPA's size categories, Marvell Waterworks is a small system (501 to 3,300 people). Phillips County has 8 active public water systems, and Marvell Waterworks is the 6th-largest of them by population served. Its population served is about half of the county average of 2,059 people per system, and accounts for 6.3% of the 16,469 people reported by systems filed under the county. Across Arkansas, the 853 active systems average 3,592 people each. Nationally, the average active community water system reports serving 6,703 people, so Marvell Waterworks is well below 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. Arkansas has 660 active community water systems, 77% 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 Marvell Waterworks?
EPA lists Marvell Waterworks as owned by a local government. 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. 8 of the 8 active systems in Phillips County (100%) are also owned by a local government.
Does Marvell Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. The violations listed here began between May 2018 and December 2025. By type: 6 reporting, 2 monitoring, 2 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (8 of them). EPA lists 10 as resolved and 2 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-12-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2025-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-06-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2025-05-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2025-04-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-09-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-09-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-12-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-09-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-06-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2018-05-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | 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.
Marvell Waterworks: frequently asked questions
Who runs Marvell Waterworks?
Marvell Waterworks (PWSID AR0000421) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Marvell Waterworks serve?
Marvell Waterworks reports serving 1,035 people through 414 service connections in Phillips County, Arkansas.
Where does Marvell Waterworks 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 Marvell Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 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 Marvell Waterworks' 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, one is health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the AR state drinking water program.
Where can I find Marvell Waterworks' water quality report?
As a community water system, Marvell Waterworks 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 Phillips County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| West Helena Water Works | Phillips | 5,693 | Community | Groundwater |
| Barton Lexa Water Association | Phillips | 3,642 | Community | Groundwater |
| Helena Water Sewer | Phillips | 2,708 | Community | Groundwater |
| Marvell Rural Water Assoc | Phillips | 1,305 | Community | Groundwater |
| Elaine Waterworks | Phillips | 1,233 | Community | Groundwater |
| Lake View Municipal Water | Phillips | 665 | 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, “Marvell Waterworks, PWSID AR0000421, Arkansas”, https://aquacensus.com/water-systems/arkansas/marvell-waterworks-ar0000421 (data as of October 1, 2026).