Public water system · AR0000430
ActiveMarked Tree Waterworks
At a glance
Marked Tree Waterworks (PWSID AR0000430) is an active community water system in Poinsett County, Arkansas. It reports serving 2,610 people through 1,025 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,610
Service connections
1,025
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Marked Tree Waterworks compare with other water systems in Poinsett County?
By EPA's size categories, Marked Tree Waterworks is a small system (501 to 3,300 people). Poinsett County has 12 active public water systems, and Marked Tree Waterworks is the 6th-largest of them by population served. Its population served is well below the county average of 9,786 people per system, and accounts for 2.2% of the 117,437 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 Marked Tree Waterworks is about 61% 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 Marked Tree Waterworks?
EPA lists Marked Tree 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. 12 of the 12 active systems in Poinsett County (100%) are also owned by a local government.
Does Marked Tree Waterworks have drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in December 2025. The violations listed here began between July 1994 and December 2025. By type: 3 monitoring, 2 reporting, 2 public notice, recordkeeping or other, 1 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Revised Total Coliform Rule (5 of them). EPA lists 4 as unaddressed, 3 as archived and 2 as resolved. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2025-11-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2025-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Unaddressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2024-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2006-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
All 9 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.
Marked Tree Waterworks: frequently asked questions
Who runs Marked Tree Waterworks?
Marked Tree Waterworks (PWSID AR0000430) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Marked Tree Waterworks serve?
Marked Tree Waterworks reports serving 2,610 people through 1,025 service connections in Poinsett County, Arkansas.
Where does Marked Tree 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 Marked Tree Waterworks have any drinking water violations?
EPA's records list 9 violations for this system; 1 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 Marked Tree 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. EPA's records list 9 violations for this system; 1 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 Marked Tree Waterworks' water quality report?
As a community water system, Marked Tree 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 Poinsett County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Jonesboro Water System | Poinsett + 2 more | 81,888 | Community | Groundwater |
| Trumann Waterworks | Poinsett | 10,000 | Community | Groundwater |
| Cross County Rural Water Sys | Poinsett + 5 more | 8,750 | Community | Groundwater |
| Crowleys Ridge Water Assoc | Poinsett | 3,873 | Community | Groundwater |
| Harrisburg Waterworks | Poinsett | 2,824 | Community | Groundwater |
| Lepanto Waterworks | Poinsett | 2,231 | 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, “Marked Tree Waterworks, PWSID AR0000430, Arkansas”, https://aquacensus.com/water-systems/arkansas/marked-tree-waterworks-ar0000430 (data as of October 1, 2026).