Public water system · KY0410472
ActiveWilliamstown Municipal Water Dept
At a glance
Williamstown Municipal Water Dept (PWSID KY0410472) is an active community water system in Grant County, Kentucky. It reports serving 5,495 people through 1,983 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, 6 are health-based, and the most recent began in December 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,495
Service connections
1,983
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Williamstown Municipal Water Dept compare with other water systems in Grant County?
By EPA's size categories, Williamstown Municipal Water Dept is a medium system (3,301 to 10,000 people). Grant County has 4 active public water systems, and Williamstown Municipal Water Dept is the 2nd-largest of them by population served. Its population served is about 29% below the county average of 7,771 people per system, and accounts for 18% of the 31,082 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 Williamstown Municipal Water Dept is about 18% 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. 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 Williamstown Municipal Water Dept?
EPA lists Williamstown Municipal Water Dept 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. 4 of the 4 active systems in Grant County (100%) are also owned by a local government.
Does Williamstown Municipal Water Dept have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in December 2016. The violations listed here began between July 2014 and December 2016. By type: 6 contaminant level above the legal limit, 4 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Haloacetic acids (HAA5) (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 |
|---|---|---|---|---|
| 2016-12-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloritecode 1009 | No | Resolved |
| 2016-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2016-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2016-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2016-01-01 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2016-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2016-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2015-10-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2014-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | 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.
Williamstown Municipal Water Dept: frequently asked questions
Who runs Williamstown Municipal Water Dept?
Williamstown Municipal Water Dept (PWSID KY0410472) is a community water system owned by a local government. It is regulated by the KY state drinking water program.
How many people does Williamstown Municipal Water Dept serve?
Williamstown Municipal Water Dept reports serving 5,495 people through 1,983 service connections in Grant County, Kentucky.
Where does Williamstown Municipal Water Dept 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 Williamstown Municipal Water Dept have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in December 2016. 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 Williamstown Municipal Water Dept'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, 6 are health-based, and the most recent began in December 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the KY state drinking water program.
Where can I find Williamstown Municipal Water Dept's water quality report?
As a community water system, Williamstown Municipal Water Dept 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 Grant County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bullock Pen Water District | Grant | 20,048 | Community | Surface water |
| Corinth Water District | Grant | 3,139 | Community | Purchased surface water |
| Dry Ridge Water Works Commission | Grant | 2,400 | 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, “Williamstown Municipal Water Dept, PWSID KY0410472, Kentucky”, https://aquacensus.com/water-systems/kentucky/williamstown-municipal-water-dept-ky0410472 (data as of October 1, 2026).