Public water system · MD1080039
ActiveNaval Support Facility, Stump Neck Annex
At a glance
Naval Support Facility, Stump Neck Annex (PWSID MD1080039) is an active non-transient non-community water system in Charles County, Maryland. It reports serving 495 people through 45 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2009.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
495
Service connections
45
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Naval Support Facility, Stump Neck Annex compare with other water systems in Charles County?
By EPA's size categories, Naval Support Facility, Stump Neck Annex is a very small system (500 people or fewer). Charles County has 134 active public water systems. Its population served is about 65% above the county average of 300 people per system, and accounts for 1.2% of the 40,197 people reported by systems filed under the county. Across Maryland, the 2,992 active systems average 1,947 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Naval Support Facility, Stump Neck Annex is about 15% above 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. Maryland has 491 active non-transient non-community water systems, 16% of the state's 2,992 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,870 Maryland systems (96%) list groundwater as their primary source.
Who owns and regulates Naval Support Facility, Stump Neck Annex?
EPA lists Naval Support Facility, Stump Neck Annex as owned by the federal government. The MD state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 2 of the 134 active systems in Charles County (1.5%) are also owned by the federal government.
Does Naval Support Facility, Stump Neck Annex have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2009. The violations listed here began between April 1996 and January 2009. By type: 2 monitoring and reporting. The contaminants or rules involved are Nitrate and Total coliform bacteria (TCR). EPA lists 1 as resolved and 1 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 |
|---|---|---|---|---|
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1996-04-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
All 2 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.
Naval Support Facility, Stump Neck Annex: frequently asked questions
Who runs Naval Support Facility, Stump Neck Annex?
Naval Support Facility, Stump Neck Annex (PWSID MD1080039) is a non-transient non-community water system owned by the federal government. It is regulated by the MD state drinking water program.
How many people does Naval Support Facility, Stump Neck Annex serve?
Naval Support Facility, Stump Neck Annex reports serving 495 people through 45 service connections in Charles County, Maryland.
Where does Naval Support Facility, Stump Neck Annex 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 Naval Support Facility, Stump Neck Annex have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2009. 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 Naval Support Facility, Stump Neck Annex'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 2 violations for this system; none is health-based, and the most recent began in January 2009. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Naval Support Facility, Stump Neck Annex's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Naval Support Facility, Stump Neck Annex 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 Charles County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Town of La Plata | Charles | 11,535 | Community | Groundwater |
| Town of Indian Head | Charles | 4,100 | Community | Groundwater |
| Naval Support Facility, Indian Head | Charles | 3,321 | Community | Groundwater |
| Potomac Heights | Charles | 1,800 | Community | Groundwater |
| Welcome Center (Newburg) | Charles | 1,004 | Transient non-community | Groundwater |
| Beantown Texaco Food -Dash in | Charles | 900 | 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, “Naval Support Facility, Stump Neck Annex, PWSID MD1080039, Maryland”, https://aquacensus.com/water-systems/maryland/naval-support-facility-stump-neck-annex-md1080039 (data as of October 1, 2026).