Public water system · VA6059624
ActiveMount Vernon
At a glance
Mount Vernon (PWSID VA6059624) is an active non-transient non-community water system in Fairfax County, Virginia. It reports serving 3,000 people through 10 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,000
Service connections
10
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Mount Vernon compare with other water systems in Fairfax County?
By EPA's size categories, Mount Vernon is a small system (501 to 3,300 people). Fairfax County has 43 active public water systems. Its population served is well below the county average of 30,570 people per system, and accounts for 0.2% of the 1,314,517 people reported by systems filed under the county. Across Virginia, the 2,420 active systems average 3,122 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Mount Vernon is about 7 times that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Virginia has 443 active non-transient non-community water systems, 18% 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 Mount Vernon?
EPA lists Mount Vernon as privately owned. 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. 18 of the 43 active systems in Fairfax County (42%) are also privately owned.
Does Mount Vernon have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2022. The violations listed here began between January 1998 and December 2022. By type: 9 monitoring and reporting, 2 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 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 |
|---|---|---|---|---|
| 2022-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2022-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2007-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2006-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 1999-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1998-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | 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.
Mount Vernon: frequently asked questions
Who runs Mount Vernon?
Mount Vernon (PWSID VA6059624) is a non-transient non-community water system privately owned. It is regulated by the VA state drinking water program.
How many people does Mount Vernon serve?
Mount Vernon reports serving 3,000 people through 10 service connections in Fairfax County, Virginia.
Where does Mount Vernon 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 Mount Vernon have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2022. 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 Mount Vernon'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, one is health-based, and the most recent began in December 2022. For current results, consult EPA ECHO, or the VA state drinking water program.
Where can I find Mount Vernon's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Mount Vernon is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Fairfax County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fairfax County Water Authority | Fairfax | 1,121,613 | Community | Surface water |
| Dulles Airport | Fairfax | 76,500 | Non-transient non-community | Purchased surface water |
| Fort Belvoir | Fairfax | 39,303 | Community | Purchased surface water |
| Vienna, Town of | Fairfax | 27,134 | Community | Purchased surface water |
| Herndon, Town of | Fairfax | 24,601 | Community | Purchased surface water |
| Fort Belvoir North Area | Fairfax | 11,822 | Non-transient non-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, “Mount Vernon, PWSID VA6059624, Virginia”, https://aquacensus.com/water-systems/virginia/mount-vernon-va6059624 (data as of October 1, 2026).