Public water system · MT0002401
ActiveL and C Caverns State Park Cg
At a glance
L and C Caverns State Park Cg (PWSID MT0002401) is an active transient non-community water system in Jefferson County, Montana. It reports serving 114 people through 11 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in January 2004.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
114
Service connections
11
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does L and C Caverns State Park Cg compare with other water systems in Jefferson County?
By EPA's size categories, L and C Caverns State Park Cg is a very small system (500 people or fewer). Jefferson County has 41 active public water systems. Its population served is about half of the county average of 241 people per system, and accounts for 1.2% of the 9,886 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active transient non-community water system reports serving 144 people, so L and C Caverns State Park Cg is about 21% 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. Montana has 1,206 active transient non-community water systems, 51% of the state's 2,378 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,994 Montana systems (84%) list groundwater as their primary source.
Who owns and regulates L and C Caverns State Park Cg?
EPA lists L and C Caverns State Park Cg as owned by a state government. The MT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 41 active systems in Jefferson County (15%) are also owned by a state government.
Does L and C Caverns State Park Cg have drinking water violations?
EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in January 2004. The violations listed here began between January 1981 and January 2004. By type: 6 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 7 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 |
|---|---|---|---|---|
| 2004-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
| 1995-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-05-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1981-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
All 8 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.
L and C Caverns State Park Cg: frequently asked questions
Who runs L and C Caverns State Park Cg?
L and C Caverns State Park Cg (PWSID MT0002401) is a transient non-community water system owned by a state government. It is regulated by the MT state drinking water program.
How many people does L and C Caverns State Park Cg serve?
L and C Caverns State Park Cg reports serving 114 people through 11 service connections in Jefferson County, Montana.
Where does L and C Caverns State Park Cg 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 L and C Caverns State Park Cg have any drinking water violations?
EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in January 2004. 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 L and C Caverns State Park Cg'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 8 violations for this system; 2 are health-based, and the most recent began in January 2004. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find L and C Caverns State Park Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. L and C Caverns State Park Cg 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Whitehall Town of | Jefferson | 1,500 | Community | Groundwater |
| Boulder City of | Jefferson | 1,400 | Community | Groundwater |
| Jefferson Hills Wua | Jefferson | 780 | Community | Groundwater |
| Lewis and Clark Caverns Visitor Center | Jefferson | 615 | Transient non-community | Groundwater under influence of surface water |
| Jefferson City South Rest Stop | Jefferson | 600 | Transient non-community | Groundwater |
| Montana City School Dist 27 | Jefferson | 534 | 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, “L and C Caverns State Park Cg, PWSID MT0002401, Montana”, https://aquacensus.com/water-systems/montana/l-and-c-caverns-state-park-cg-mt0002401 (data as of October 1, 2026).