Public water system · KY0720933
ActiveLyon County Water District
At a glance
Lyon County Water District (PWSID KY0720933) is an active community water system in Lyon County, Kentucky. It reports serving 6,744 people through 2,824 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, 9 are health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,744
Service connections
2,824
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Lyon County Water District compare with other water systems in Lyon County?
By EPA's size categories, Lyon County Water District is a medium system (3,301 to 10,000 people). Lyon County has 6 active public water systems, and Lyon County Water District is the largest of them by population served. Its population served is about 3.1 times the county average of 2,205 people per system, and accounts for 51% of the 13,230 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 Lyon County Water District is roughly in line with 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 Lyon County Water District?
EPA lists Lyon County Water District 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. 3 of the 6 active systems in Lyon County (50%) are also owned by a local government.
Does Lyon County Water District have drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in April 2025. The violations listed here began between November 2016 and April 2025. By type: 9 contaminant level above the legal limit and 3 monitoring. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (6 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 |
|---|---|---|---|---|
| 2025-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2025-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2024-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2021-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | 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.
Lyon County Water District: frequently asked questions
Who runs Lyon County Water District?
Lyon County Water District (PWSID KY0720933) is a community water system owned by a local government. It is regulated by the KY state drinking water program.
How many people does Lyon County Water District serve?
Lyon County Water District reports serving 6,744 people through 2,824 service connections in Lyon County, Kentucky.
Where does Lyon County Water District 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 Lyon County Water District have any drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in April 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 Lyon County Water District'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, 9 are health-based, and the most recent began in April 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the KY state drinking water program.
Where can I find Lyon County Water District's water quality report?
As a community water system, Lyon County Water District 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 Lyon County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eddyville Water Department | Lyon | 3,843 | Community | Surface water |
| Kentucky State Penitentiary | Lyon | 1,200 | Community | Surface water |
| Kuttawa Water Department | Lyon | 1,143 | Community | Surface water |
| Buzzard Rock Resort and Marina | Lyon | 150 | Transient non-community | Groundwater |
| Eddy Creek Marina Resort LLC | Lyon | 150 | Transient non-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, “Lyon County Water District, PWSID KY0720933, Kentucky”, https://aquacensus.com/water-systems/kentucky/lyon-county-water-district-ky0720933 (data as of October 1, 2026).