Public water system · VA2109450
ActiveLouisa, Town of
At a glance
Town of Louisa (PWSID VA2109450) is an active community water system in Louisa County, Virginia. It reports serving 1,555 people through 872 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, 12 are health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,555
Service connections
872
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Town of Louisa compare with other water systems in Louisa County?
By EPA's size categories, Town of Louisa is a small system (501 to 3,300 people). Louisa County has 33 active public water systems, and Town of Louisa is the 4th-largest of them by population served. Its population served is about 167% above the county average of 582 people per system, and accounts for 8.1% of the 19,199 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 Louisa 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. Virginia has 844 active community water systems, 35% of the state's 2,420 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 162 Virginia systems (6.7%) list purchased surface water as their primary source.
Who owns and regulates Town of Louisa?
EPA lists Town of Louisa 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. 9 of the 33 active systems in Louisa County (27%) are also owned by a local government.
Does Town of Louisa have drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in January 2026. The violations listed here began between July 2016 and January 2026. By type: 12 contaminant level above the legal limit. The contaminant or rule involved most often is Haloacetic acids (HAA5) (8 of them). EPA lists 9 as resolved and 3 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2025-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Archived |
| 2017-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2017-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2017-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2017-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | 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 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2016-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2016-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | 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.
Town of Louisa: frequently asked questions
Who runs Town of Louisa?
Town of Louisa (PWSID VA2109450) 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 Louisa serve?
Town of Louisa reports serving 1,555 people through 872 service connections in Louisa County, Virginia.
Where does Town of Louisa 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 Town of Louisa have any drinking water violations?
Of the 12 most recent violations in EPA's records, 12 are health-based, and the most recent began in January 2026. 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 Louisa'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, 12 are health-based, and the most recent began in January 2026. 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 Louisa's water quality report?
As a community water system, Town of Louisa 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 Louisa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Louisa County Water Authority | Louisa | 4,254 | Community | Surface water |
| Louisa County Zion Crossroads | Louisa | 2,903 | Community | Groundwater |
| Blue Ridge Shores | Louisa | 1,707 | Community | Groundwater |
| North Anna Power Station | Louisa | 1,200 | Non-transient non-community | Groundwater |
| Shenandoah Crossing | Louisa | 950 | Community | Groundwater |
| Gum Spring Bp | Louisa | 950 | 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, “Louisa, Town of, PWSID VA2109450, Virginia”, https://aquacensus.com/water-systems/virginia/louisa-town-of-va2109450 (data as of October 1, 2026).