Public water system · CO0326485
ActiveLost Lake Cg
At a glance
Lost Lake Cg (PWSID CO0326485) is an active transient non-community water system in Gunnison County, Colorado. It reports serving 70 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Lost Lake Cg compare with other water systems in Gunnison County?
By EPA's size categories, Lost Lake Cg is a very small system (500 people or fewer). Gunnison County has 71 active public water systems. Its population served is well below the county average of 383 people per system, and accounts for 0.3% of the 27,176 people reported by systems filed under the county. Across Colorado, the 2,207 active systems average 3,400 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Lost Lake Cg is about half of 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. Colorado has 956 active transient non-community water systems, 43% of the state's 2,207 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,437 Colorado systems (65%) list groundwater as their primary source.
Who owns and regulates Lost Lake Cg?
EPA lists Lost Lake Cg as owned by the federal government. The CO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 15 of the 71 active systems in Gunnison County (21%) are also owned by the federal government.
Does Lost Lake Cg have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2017. The violations listed here began between January 2011 and September 2017. By type: 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Public Notice, Total coliform bacteria (TCR) and Nitrite. EPA lists 3 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 |
|---|---|---|---|---|
| 2017-09-02 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2011-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
All 3 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.
Lost Lake Cg: frequently asked questions
Who runs Lost Lake Cg?
Lost Lake Cg (PWSID CO0326485) is a transient non-community water system owned by the federal government. It is regulated by the CO state drinking water program.
How many people does Lost Lake Cg serve?
Lost Lake Cg reports serving 70 people through 3 service connections in Gunnison County, Colorado.
Where does Lost Lake 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 Lost Lake Cg have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in September 2017. 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 Lost Lake 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 3 violations for this system; none is health-based, and the most recent began in September 2017. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Lost Lake Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Lost Lake 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 Gunnison County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Gunnison City of | Gunnison | 9,610 | Community | Groundwater |
| Mount Crested Butte Wsd | Gunnison | 3,296 | Community | Surface water |
| Crested Butte Town of | Gunnison | 2,440 | Community | Surface water |
| Crested Butte South | Gunnison | 2,000 | Community | Groundwater |
| Cbmr Paradise Warming House | Gunnison | 1,530 | Transient non-community | Groundwater |
| Gunnison County Wsd | Gunnison | 800 | Community | 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, “Lost Lake Cg, PWSID CO0326485, Colorado”, https://aquacensus.com/water-systems/colorado/lost-lake-cg-co0326485 (data as of October 1, 2026).