Public water system · VA6107150
ActiveHamilton, Town of
At a glance
Town of Hamilton (PWSID VA6107150) is an active community water system in Loudoun County, Virginia. It reports serving 2,240 people through 700 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; none is health-based, and the most recent began in January 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,240
Service connections
700
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Town of Hamilton compare with other water systems in Loudoun County?
By EPA's size categories, Town of Hamilton is a small system (501 to 3,300 people). Loudoun County has 92 active public water systems, and Town of Hamilton is the 6th-largest of them by population served. Its population served is about half of the county average of 4,681 people per system, and accounts for 0.5% of the 430,687 people reported by systems filed under the county. Across Virginia, the 2,420 active systems average 3,122 people each. Nationally, the average active community water system reports serving 6,703 people, so Town of Hamilton is about 67% 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. Virginia has 844 active community water systems, 35% of the state's 2,420 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,089 Virginia systems (86%) list groundwater as their primary source.
Who owns and regulates Town of Hamilton?
EPA lists Town of Hamilton as owned by a local government. The VA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 14 of the 92 active systems in Loudoun County (15%) are also owned by a local government.
Does Town of Hamilton have drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in January 2021. The violations listed here began between June 2000 and January 2021. By type: 8 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Nitrate-Nitrite (3 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2019-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2000-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 9 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.
Town of Hamilton: frequently asked questions
Who runs Town of Hamilton?
Town of Hamilton (PWSID VA6107150) is a community water system owned by a local government. It is regulated by the VA state drinking water program.
How many people does Town of Hamilton serve?
Town of Hamilton reports serving 2,240 people through 700 service connections in Loudoun County, Virginia.
Where does Town of Hamilton 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 Town of Hamilton have any drinking water violations?
EPA's records list 9 violations for this system; none is health-based, and the most recent began in January 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 Town of Hamilton'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. EPA's records list 9 violations for this system; none is health-based, and the most recent began in January 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the VA state drinking water program.
Where can I find Town of Hamilton's water quality report?
As a community water system, Town of Hamilton 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 Loudoun County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Loudoun Water - Central System | Loudoun | 334,808 | Community | Surface water |
| Leesburg, Town of | Loudoun | 65,028 | Community | Surface water |
| Purcellville, Town of | Loudoun | 8,929 | Community | Surface water |
| Round Hill, Town of | Loudoun | 5,055 | Community | Groundwater |
| Lovettsville, Town of | Loudoun | 2,964 | Community | Groundwater |
| Selma Estates | Loudoun | 1,540 | Community | Groundwater under influence of 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, “Hamilton, Town of, PWSID VA6107150, Virginia”, https://aquacensus.com/water-systems/virginia/hamilton-town-of-va6107150 (data as of October 1, 2026).