Public water system · ART001101
ActiveGrassy Knob Subordinate Sd
At a glance
Grassy Knob Subordinate Sd (PWSID ART001101) is an active community water system in Carroll County, Arkansas. It reports serving 88 people through 35 service connections. Its primary water source is purchased surface water, 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 September 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
88
Service connections
35
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Grassy Knob Subordinate Sd compare with other water systems in Carroll County?
By EPA's size categories, Grassy Knob Subordinate Sd is a very small system (500 people or fewer). Carroll County has 41 active public water systems. Its population served is well below the county average of 565 people per system, and accounts for 0.4% of the 23,147 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 Grassy Knob Subordinate Sd 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 237 Arkansas systems (28%) list purchased surface water as their primary source.
Who owns and regulates Grassy Knob Subordinate Sd?
EPA lists Grassy Knob Subordinate Sd 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. 19 of the 41 active systems in Carroll County (46%) are also owned by a local government.
Does Grassy Knob Subordinate Sd have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2024. The violations listed here began between January 2022 and September 2024. By type: 5 public notice, recordkeeping or other, 4 monitoring, 2 reporting and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (6 of them). EPA lists 10 as resolved and 2 as addressed. 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. Addressed means the violation is not resolved or archived and is covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-03-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-01-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-12-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-10-01 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2023-06-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Addressed |
| 2023-05-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Addressed |
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-07-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2022-01-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | 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.
Grassy Knob Subordinate Sd: frequently asked questions
Who runs Grassy Knob Subordinate Sd?
Grassy Knob Subordinate Sd (PWSID ART001101) is a community water system owned by a local government. It is regulated by the AR state drinking water program.
How many people does Grassy Knob Subordinate Sd serve?
Grassy Knob Subordinate Sd reports serving 88 people through 35 service connections in Carroll County, Arkansas.
Where does Grassy Knob Subordinate Sd get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Grassy Knob Subordinate Sd 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 September 2024. 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 Grassy Knob Subordinate Sd's 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 September 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the AR state drinking water program.
Where can I find Grassy Knob Subordinate Sd's water quality report?
As a community water system, Grassy Knob Subordinate Sd 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 Carroll County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Berryville Waterworks | Carroll | 6,813 | Community | Purchased surface water |
| Green Forest Waterworks | Carroll | 6,265 | Community | Purchased surface water |
| Eureka Springs Waterworks | Carroll | 4,053 | Community | Purchased surface water |
| Holiday Island Waterworks | Carroll | 2,446 | Community | Groundwater |
| Ozarks Rv Resort Owners Association | Carroll | 500 | Transient non-community | Groundwater |
| Oak Grove Water | Carroll | 485 | 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, “Grassy Knob Subordinate Sd, PWSID ART001101, Arkansas”, https://aquacensus.com/water-systems/arkansas/grassy-knob-subordinate-sd-art001101 (data as of October 1, 2026).