Public water system · KY0540936
ActiveMadisonville Light & Water
At a glance
Madisonville Light & Water (PWSID KY0540936) is an active community water system in Hopkins County, Kentucky. It reports serving 28,102 people through 10,413 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in September 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
28,102
Service connections
10,413
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Madisonville Light & Water compare with other water systems in Hopkins County?
By EPA's size categories, Madisonville Light & Water is a large system (10,001 to 100,000 people). Hopkins County has 10 active public water systems, and Madisonville Light & Water is the largest of them by population served. Its population served is about 4.9 times the county average of 5,743 people per system, and accounts for 49% of the 57,432 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 Madisonville Light & Water is about 4.2 times 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 135 Kentucky systems (31%) list surface water as their primary source.
Who owns and regulates Madisonville Light & Water?
EPA lists Madisonville Light & Water 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. 10 of the 10 active systems in Hopkins County (100%) are also owned by a local government.
Does Madisonville Light & Water have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in September 2021. The violations listed here began between October 2013 and September 2021. By type: 5 contaminant level above the legal limit, 5 monitoring and reporting and 2 public notice, recordkeeping or other. 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 |
|---|---|---|---|---|
| 2021-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, E. coli (RTCR) · code 1A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2018-07-19 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2017-04-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | 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 |
| 2016-10-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2016-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2016-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-01-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | 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.
Madisonville Light & Water: frequently asked questions
Who runs Madisonville Light & Water?
Madisonville Light & Water (PWSID KY0540936) is a community water system owned by a local government. It is regulated by the KY state drinking water program.
How many people does Madisonville Light & Water serve?
Madisonville Light & Water reports serving 28,102 people through 10,413 service connections in Hopkins County, Kentucky.
Where does Madisonville Light & Water get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Madisonville Light & Water have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in September 2021. 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 Madisonville Light & Water'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, 5 are health-based, and the most recent began in September 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the KY state drinking water program.
Where can I find Madisonville Light & Water's water quality report?
As a community water system, Madisonville Light & Water 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 Hopkins County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| South Hopkins Water District | Hopkins | 8,440 | Community | Purchased surface water |
| Nebo Water District | Hopkins | 4,702 | Community | Purchased surface water |
| North Hopkins Water District | Hopkins | 3,725 | Community | Purchased surface water |
| Dawson Springs Water & Sewer | Hopkins | 2,631 | Community | Surface water |
| Nortonville Water Works | Hopkins | 2,611 | Community | Groundwater |
| Hanson Water System | Hopkins | 2,157 | Community | Purchased 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, “Madisonville Light & Water, PWSID KY0540936, Kentucky”, https://aquacensus.com/water-systems/kentucky/madisonville-light-water-ky0540936 (data as of October 1, 2026).