Public water system · MD1021539
ActiveSelby Bay Marina
At a glance
Selby Bay Marina (PWSID MD1021539) is an active transient non-community water system in Anne Arundel County, Maryland. It reports serving 103 people through 68 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; all are health-based, and the most recent began in October 2003.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
103
Service connections
68
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Selby Bay Marina compare with other water systems in Anne Arundel County?
By EPA's size categories, Selby Bay Marina is a very small system (500 people or fewer). Anne Arundel County has 405 active public water systems. Its population served is well below the county average of 1,397 people per system, and accounts for less than 0.1% of the 565,834 people reported by systems filed under the county. Across Maryland, the 2,992 active systems average 1,947 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Selby Bay Marina is about 28% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Maryland has 2,079 active transient non-community water systems, 69% 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 Selby Bay Marina?
EPA lists Selby Bay Marina as privately owned. 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. 361 of the 405 active systems in Anne Arundel County (89%) are also privately owned.
Does Selby Bay Marina have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in October 2003. The violations listed here began between October 1999 and October 2003. By type: 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2003-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1999-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
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.
Selby Bay Marina: frequently asked questions
Who runs Selby Bay Marina?
Selby Bay Marina (PWSID MD1021539) is a transient non-community water system privately owned. It is regulated by the MD state drinking water program.
How many people does Selby Bay Marina serve?
Selby Bay Marina reports serving 103 people through 68 service connections in Anne Arundel County, Maryland.
Where does Selby Bay Marina 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 Selby Bay Marina have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in October 2003. 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 Selby Bay Marina'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; all are health-based, and the most recent began in October 2003. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Selby Bay Marina's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Selby Bay Marina is a 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 Anne Arundel County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Glen Burnie-Broadneck | Anne Arundel | 290,606 | Community | Groundwater |
| Crofton-Odenton | Anne Arundel | 62,986 | Community | Groundwater |
| Fort George G. Meade | Anne Arundel | 62,234 | Community | Groundwater |
| City of Annapolis | Anne Arundel | 35,000 | Community | Groundwater |
| Broad Creek | Anne Arundel | 26,033 | Community | Groundwater |
| U.S. Naval Academy | Anne Arundel | 8,700 | 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, “Selby Bay Marina, PWSID MD1021539, Maryland”, https://aquacensus.com/water-systems/maryland/selby-bay-marina-md1021539 (data as of October 1, 2026).