Public water system · AR0000002
ActiveMount Holly Waterworks
At a glance
Mount Holly Waterworks (PWSID AR0000002) is an active community water system in Union County, Arkansas. It reports serving 384 people through 153 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in February 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
384
Service connections
153
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mount Holly Waterworks compare with other water systems in Union County?
By EPA's size categories, Mount Holly Waterworks is a very small system (500 people or fewer). Union County has 25 active public water systems. Its population served is well below the county average of 1,582 people per system, and accounts for 1% of the 39,541 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 Mount Holly 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 Mount Holly Waterworks?
EPA lists Mount Holly 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. 13 of the 25 active systems in Union County (52%) are also owned by a local government.
Does Mount Holly Waterworks have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in February 2018. The violations listed here began between February 2006 and February 2018. By type: 3 monitoring and reporting, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2018-02-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2017-02-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2015-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2006-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 5 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.
Mount Holly Waterworks: frequently asked questions
Who runs Mount Holly Waterworks?
Mount Holly Waterworks (PWSID AR0000002) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Mount Holly Waterworks serve?
Mount Holly Waterworks reports serving 384 people through 153 service connections in Union County, Arkansas.
Where does Mount Holly 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 Mount Holly Waterworks have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in February 2018. 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 Mount Holly 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 5 violations for this system; 1 is health-based, and the most recent began in February 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the AR state drinking water program.
Where can I find Mount Holly Waterworks' water quality report?
As a community water system, Mount Holly 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 Union County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| El Dorado Waterworks | Union | 17,932 | Community | Groundwater |
| Smackover Waterworks | Union | 2,821 | Community | Groundwater |
| Parkers Chapel Public Water | Union | 2,391 | Community | Groundwater |
| Wildwood Water Association | Union | 1,350 | Community | Groundwater |
| Faircrest Water Association | Union | 1,329 | Community | Groundwater |
| Old Union Public Water Authority | Union | 1,200 | 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, “Mount Holly Waterworks, PWSID AR0000002, Arkansas”, https://aquacensus.com/water-systems/arkansas/mount-holly-waterworks-ar0000002 (data as of October 1, 2026).