Public water system · CO0326584
ActiveOne Mile Cg
At a glance
One Mile Cg (PWSID CO0326584) is an active transient non-community water system in Gunnison County, Colorado. It reports serving 86 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in September 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
86
Service connections
2
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does One Mile Cg compare with other water systems in Gunnison County?
By EPA's size categories, One Mile 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 One Mile Cg is about 40% 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. 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 One Mile Cg?
EPA lists One Mile 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 One Mile Cg have drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in September 2019. The violations listed here began between April 1992 and September 2019. By type: 4 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 5 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-09-27 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Unaddressed |
| 2017-06-11 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1992-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 6 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.
One Mile Cg: frequently asked questions
Who runs One Mile Cg?
One Mile Cg (PWSID CO0326584) 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 One Mile Cg serve?
One Mile Cg reports serving 86 people through 2 service connections in Gunnison County, Colorado.
Where does One Mile 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 One Mile Cg have any drinking water violations?
EPA's records list 6 violations for this system; 1 is health-based, and the most recent began in September 2019. 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 One Mile 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 6 violations for this system; 1 is health-based, and the most recent began in September 2019. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find One Mile Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. One Mile 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, “One Mile Cg, PWSID CO0326584, Colorado”, https://aquacensus.com/water-systems/colorado/one-mile-cg-co0326584 (data as of October 1, 2026).