Public water system · MD1061141
ActiveWhistle Stop
At a glance
Whistle Stop (PWSID MD1061141) is an active transient non-community water system in Carroll County, Maryland. It reports serving 25 people through 1 service connection. 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 July 1994.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Whistle Stop compare with other water systems in Carroll County?
By EPA's size categories, Whistle Stop is a very small system (500 people or fewer). Carroll County has 208 active public water systems. Its population served is well below the county average of 618 people per system, and accounts for less than 0.1% of the 128,551 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 Whistle Stop is well 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 Whistle Stop?
EPA lists Whistle Stop 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. 185 of the 208 active systems in Carroll County (89%) are also privately owned.
Does Whistle Stop have drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 1994. The violations listed here began between July 1993 and July 1994. 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 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 |
|---|---|---|---|---|
| 1994-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Whistle Stop: frequently asked questions
Who runs Whistle Stop?
Whistle Stop (PWSID MD1061141) is a transient non-community water system privately owned. It is regulated by the MD state drinking water program.
How many people does Whistle Stop serve?
Whistle Stop reports serving 25 people through 1 service connection in Carroll County, Maryland.
Where does Whistle Stop 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 Whistle Stop have any drinking water violations?
EPA's records list 2 violations for this system; all are health-based, and the most recent began in July 1994. 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 Whistle Stop'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 July 1994. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Whistle Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Whistle Stop 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 Carroll County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Westminster | Carroll | 35,256 | Community | Surface water |
| Freedom District | Carroll | 24,867 | Community | Surface water |
| Town of Mount Airy | Carroll | 9,890 | Community | Groundwater |
| City of Taneytown | Carroll | 6,750 | Community | Groundwater |
| Town of Hampstead | Carroll | 6,600 | Community | Groundwater |
| Town of Manchester | Carroll | 4,954 | 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, “Whistle Stop, PWSID MD1061141, Maryland”, https://aquacensus.com/water-systems/maryland/whistle-stop-md1061141 (data as of October 1, 2026).