Public water system · MS0660002
ActiveMchenry Utility Assn, Inc.
At a glance
Mchenry Utility Assn, Inc. (PWSID MS0660002) is an active community water system in Stone County, Mississippi. It reports serving 1,653 people through 627 service connections. Its primary water source is groundwater, and EPA lists it as under public/private ownership. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,653
Service connections
627
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mchenry Utility Assn, Inc. compare with other water systems in Stone County?
By EPA's size categories, Mchenry Utility Assn, Inc. is a small system (501 to 3,300 people). Stone County has 11 active public water systems, and Mchenry Utility Assn, Inc. is the 6th-largest of them by population served. Its population served is about 20% above the county average of 1,380 people per system, and accounts for 11% of the 15,180 people reported by systems filed under the county. Across Mississippi, the 1,133 active systems average 2,832 people each. Nationally, the average active community water system reports serving 6,703 people, so Mchenry Utility Assn, Inc. 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. Mississippi has 947 active community water systems, 84% of the state's 1,133 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,053 Mississippi systems (93%) list groundwater as their primary source.
Who owns and regulates Mchenry Utility Assn, Inc.?
EPA lists Mchenry Utility Assn, Inc. as under public/private ownership. The MS state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 7 of the 11 active systems in Stone County (64%) are also under public/private ownership.
Does Mchenry Utility Assn, Inc. have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2022. The violations listed here began between July 2011 and April 2022. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Radium-228 (5 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2022-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2012-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2012-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2011-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Resolved |
| 2011-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | 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.
Mchenry Utility Assn, Inc.: frequently asked questions
Who runs Mchenry Utility Assn, Inc.?
Mchenry Utility Assn, Inc. (PWSID MS0660002) is a community water system under public/private ownership. It is regulated by the MS state drinking water program.
How many people does Mchenry Utility Assn, Inc. serve?
Mchenry Utility Assn, Inc. reports serving 1,653 people through 627 service connections in Stone County, Mississippi.
Where does Mchenry Utility Assn, Inc. 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 Mchenry Utility Assn, Inc. have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2022. 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 Mchenry Utility Assn, Inc.'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, none is health-based, and the most recent began in April 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the MS state drinking water program.
Where can I find Mchenry Utility Assn, Inc.'s water quality report?
As a community water system, Mchenry Utility Assn, Inc. 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 Stone County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Wiggins | Stone | 4,300 | Community | Groundwater |
| Magnolia Water Association | Stone | 2,107 | Community | Groundwater |
| Carnes Water Association #2 | Stone | 2,025 | Community | Groundwater |
| Sunflower Utility Assc Inc. | Stone | 1,880 | Community | Groundwater |
| New Zion Utilities, Inc. | Stone | 1,803 | Community | Groundwater |
| Ms Gulf Coast Community College | Stone | 600 | 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, “Mchenry Utility Assn, Inc., PWSID MS0660002, Mississippi”, https://aquacensus.com/water-systems/mississippi/mchenry-utility-assn-inc-ms0660002 (data as of October 1, 2026).