Public water system · KY0750055
ActiveCalhoun Water Works
At a glance
Calhoun Water Works (PWSID KY0750055) is an active community water system in McLean County, Kentucky. It reports serving 966 people through 438 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, 11 are health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
966
Service connections
438
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Calhoun Water Works compare with other water systems in McLean County?
By EPA's size categories, Calhoun Water Works is a small system (501 to 3,300 people). McLean County has 6 active public water systems, and Calhoun Water Works is the 5th-largest of them by population served. Its population served is about 32% below the county average of 1,423 people per system, and accounts for 11% of the 8,537 people reported by systems filed under the county. Across Kentucky, the 437 active systems average 11,699 people each. Nationally, the average active community water system reports serving 6,703 people, so Calhoun Water Works 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. Kentucky has 371 active community water systems, 85% of the state's 437 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 167 Kentucky systems (38%) list purchased surface water as their primary source.
Who owns and regulates Calhoun Water Works?
EPA lists Calhoun Water Works as owned by a local government. The KY 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 6 active systems in McLean County (100%) are also owned by a local government.
Does Calhoun Water Works have drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in April 2023. The violations listed here began between October 2017 and April 2023. By type: 11 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (8 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 |
|---|---|---|---|---|
| 2023-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2023-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2022-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2018-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2018-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2017-10-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | 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.
Calhoun Water Works: frequently asked questions
Who runs Calhoun Water Works?
Calhoun Water Works (PWSID KY0750055) is a community water system owned by a local government. It is regulated by the KY state drinking water program.
How many people does Calhoun Water Works serve?
Calhoun Water Works reports serving 966 people through 438 service connections in McLean County, Kentucky.
Where does Calhoun Water Works 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 Calhoun Water Works have any drinking water violations?
Of the 12 most recent violations in EPA's records, 11 are health-based, and the most recent began in April 2023. 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 Calhoun Water Works' 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, 11 are health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the KY state drinking water program.
Where can I find Calhoun Water Works' water quality report?
As a community water system, Calhoun Water Works 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 McLean County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sacramento Water Works | McLean | 2,435 | Community | Purchased surface water |
| Livermore Water Works | McLean | 2,138 | Community | Purchased surface water |
| Island Water Department | McLean | 1,512 | Community | Purchased surface water |
| Beech Grove Water System | McLean | 1,461 | Community | Purchased surface water |
| Mclean County Regional Water Commission | McLean | 25 | Community | Surface water |
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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, “Calhoun Water Works, PWSID KY0750055, Kentucky”, https://aquacensus.com/water-systems/kentucky/calhoun-water-works-ky0750055 (data as of October 1, 2026).