Public water system · MD1031288
ActiveGunpowder Falls St Pk Hart-Miller Island
At a glance
Gunpowder Falls St Pk Hart-Miller Island (PWSID MD1031288) is an active transient non-community water system in Baltimore County, Maryland. It reports serving 305 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list one violation for this system; it is health-based, and the most recent began in April 1999.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
305
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Gunpowder Falls St Pk Hart-Miller Island compare with other water systems in Baltimore County?
By EPA's size categories, Gunpowder Falls St Pk Hart-Miller Island is a very small system (500 people or fewer). Baltimore County has 272 active public water systems. Its population served is about 81% above the county average of 168 people per system, and accounts for 0.7% of the 45,805 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 Gunpowder Falls St Pk Hart-Miller Island is about twice 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 Gunpowder Falls St Pk Hart-Miller Island?
EPA lists Gunpowder Falls St Pk Hart-Miller Island as owned by a state 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. 8 of the 272 active systems in Baltimore County (2.9%) are also owned by a state government.
Does Gunpowder Falls St Pk Hart-Miller Island have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in April 1999. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 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 |
|---|---|---|---|---|
| 1999-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
The one violation in EPA's records.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.
Gunpowder Falls St Pk Hart-Miller Island: frequently asked questions
Who runs Gunpowder Falls St Pk Hart-Miller Island?
Gunpowder Falls St Pk Hart-Miller Island (PWSID MD1031288) is a transient non-community water system owned by a state government. It is regulated by the MD state drinking water program.
How many people does Gunpowder Falls St Pk Hart-Miller Island serve?
Gunpowder Falls St Pk Hart-Miller Island reports serving 305 people through 1 service connection in Baltimore County, Maryland.
Where does Gunpowder Falls St Pk Hart-Miller Island 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 Gunpowder Falls St Pk Hart-Miller Island have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in April 1999. 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 Gunpowder Falls St Pk Hart-Miller Island'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 one violation for this system; it is health-based, and the most recent began in April 1999. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Gunpowder Falls St Pk Hart-Miller Island's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Gunpowder Falls St Pk Hart-Miller Island 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 Baltimore County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Manor Shopping Center | Baltimore | 2,921 | Non-transient non-community | Purchased surface water |
| Um Saint Joseph Medical Center | Baltimore | 1,515 | Non-transient non-community | Purchased surface water |
| Stevenson University | Baltimore | 1,313 | Non-transient non-community | Groundwater |
| Hereford High School | Baltimore | 1,300 | Non-transient non-community | Groundwater |
| Fork Christian Church | Baltimore | 1,245 | Transient non-community | Groundwater |
| Hereford Middle School | Baltimore | 1,050 | Non-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, “Gunpowder Falls St Pk Hart-Miller Island, PWSID MD1031288, Maryland”, https://aquacensus.com/water-systems/maryland/gunpowder-falls-st-pk-hart-miller-island-md1031288 (data as of October 1, 2026).