Public water system · MD1101033
ActiveCatoctin Mountain Nat. Park-Misty Mount
At a glance
Catoctin Mountain Nat. Park-Misty Mount (PWSID MD1101033) is an active transient non-community water system in Frederick County, Maryland. It reports serving 668 people through 11 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list one violation for this system; it is health-based, and the most recent began in July 1993.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
668
Service connections
11
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Catoctin Mountain Nat. Park-Misty Mount compare with other water systems in Frederick County?
By EPA's size categories, Catoctin Mountain Nat. Park-Misty Mount is a small system (501 to 3,300 people). Frederick County has 211 active public water systems. Its population served is about 34% below the county average of 1,007 people per system, and accounts for 0.3% of the 212,367 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 Catoctin Mountain Nat. Park-Misty Mount is about 4.6 times 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 Catoctin Mountain Nat. Park-Misty Mount?
EPA lists Catoctin Mountain Nat. Park-Misty Mount 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. 4 of the 211 active systems in Frederick County (1.9%) are also owned by the federal government.
Does Catoctin Mountain Nat. Park-Misty Mount have drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 1993. By type: 1 contaminant level above the legal limit. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as archived. 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 |
|---|---|---|---|---|
| 1993-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
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.
Catoctin Mountain Nat. Park-Misty Mount: frequently asked questions
Who runs Catoctin Mountain Nat. Park-Misty Mount?
Catoctin Mountain Nat. Park-Misty Mount (PWSID MD1101033) is a transient non-community water system owned by the federal government. It is regulated by the MD state drinking water program.
How many people does Catoctin Mountain Nat. Park-Misty Mount serve?
Catoctin Mountain Nat. Park-Misty Mount reports serving 668 people through 11 service connections in Frederick County, Maryland.
Where does Catoctin Mountain Nat. Park-Misty Mount 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 Catoctin Mountain Nat. Park-Misty Mount have any drinking water violations?
EPA's records list one violation for this system; it is health-based, and the most recent began in July 1993. 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 Catoctin Mountain Nat. Park-Misty Mount'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 July 1993. For current results, consult EPA ECHO, or the MD state drinking water program.
Where can I find Catoctin Mountain Nat. Park-Misty Mount's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Catoctin Mountain Nat. Park-Misty Mount 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 Frederick County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| New Design - Frederick County | Frederick | 74,911 | Community | Surface water |
| City of Frederick | Frederick | 54,000 | Community | Surface water |
| Town of Walkersville | Frederick | 8,440 | Community | Groundwater under influence of surface water |
| Fort Detrick | Frederick | 7,900 | Community | Surface water |
| City of Brunswick | Frederick | 7,312 | Community | Surface water |
| Town of Thurmont | Frederick | 6,200 | Community | Groundwater under influence of 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, “Catoctin Mountain Nat. Park-Misty Mount, PWSID MD1101033, Maryland”, https://aquacensus.com/water-systems/maryland/catoctin-mountain-nat-park-misty-mount-md1101033 (data as of October 1, 2026).