Public water system · AR0000385
ActiveClarendon Waterworks
At a glance
Clarendon Waterworks (PWSID AR0000385) is an active community water system in Monroe County, Arkansas. It reports serving 1,320 people through 660 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, 7 are health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,320
Service connections
660
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Clarendon Waterworks compare with other water systems in Monroe County?
By EPA's size categories, Clarendon Waterworks is a small system (501 to 3,300 people). Monroe County has 7 active public water systems, and Clarendon Waterworks is the 3rd-largest of them by population served. Its population served is about 25% above the county average of 1,058 people per system, and accounts for 18% of the 7,405 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 Clarendon 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 Clarendon Waterworks?
EPA lists Clarendon 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. 6 of the 7 active systems in Monroe County (86%) are also owned by a local government.
Does Clarendon Waterworks have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in December 2025. The violations listed here began between June 2025 and December 2025. By type: 7 required treatment not met, 3 public notice, recordkeeping or other and 2 reporting. The contaminant or rule involved most often is Stage 1 Disinfectants and Disinfection Byproducts Rule (7 of them). EPA lists 11 as addressed and 1 as unaddressed. Addressed means the violation is not resolved or archived and is covered by formal enforcement. 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 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
| 2025-11-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
| 2025-10-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Addressed |
| 2025-10-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
| 2025-09-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Addressed |
| 2025-09-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
| 2025-09-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Addressed |
| 2025-08-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
| 2025-07-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Addressed |
| 2025-07-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2025-06-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Addressed |
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.
Clarendon Waterworks: frequently asked questions
Who runs Clarendon Waterworks?
Clarendon Waterworks (PWSID AR0000385) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Clarendon Waterworks serve?
Clarendon Waterworks reports serving 1,320 people through 660 service connections in Monroe County, Arkansas.
Where does Clarendon 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 Clarendon Waterworks have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are 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 Clarendon 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, 7 are 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 Clarendon Waterworks' water quality report?
As a community water system, Clarendon 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 Monroe County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Brinkley Waterworks | Monroe | 2,992 | Community | Groundwater |
| Holly Grove Waterworks | Monroe | 1,557 | Community | Groundwater |
| East Monroe County Water Users | Monroe | 730 | Community | Purchased groundwater |
| United Water Association | Monroe | 450 | Community | Purchased groundwater |
| Fedex Freight East | Monroe | 232 | Non-transient non-community | Groundwater |
| Roe Waterworks | Monroe | 124 | 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, “Clarendon Waterworks, PWSID AR0000385, Arkansas”, https://aquacensus.com/water-systems/arkansas/clarendon-waterworks-ar0000385 (data as of October 1, 2026).