Public water system · CO0314485
ActiveSt Charles Cg
At a glance
St Charles Cg (PWSID CO0314485) is an active transient non-community water system in Custer County, Colorado. It reports serving 60 people through 1 service connection. 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 July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
60
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does St Charles Cg compare with other water systems in Custer County?
By EPA's size categories, St Charles Cg is a very small system (500 people or fewer). Custer County has 17 active public water systems. Its population served is well below the county average of 245 people per system, and accounts for 1.4% of the 4,164 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 St Charles Cg is about 58% 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 St Charles Cg?
EPA lists St Charles 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. 8 of the 17 active systems in Custer County (47%) are also owned by the federal government.
Does St Charles Cg have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in July 2019. The violations listed here began between June 2016 and July 2019. By type: 2 monitoring and 1 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). 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 |
|---|---|---|---|---|
| 2019-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-06-11 | ReportingReport Startup Procedures Cert Form (RTCR) · code 4C | Revised Total Coliform Rulecode 8000 | 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.
St Charles Cg: frequently asked questions
Who runs St Charles Cg?
St Charles Cg (PWSID CO0314485) 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 St Charles Cg serve?
St Charles Cg reports serving 60 people through 1 service connection in Custer County, Colorado.
Where does St Charles 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 St Charles 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 July 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 St Charles 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 July 2019. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find St Charles Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. St Charles 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 Custer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Round Mountain Wsd | Custer | 1,950 | Community | Groundwater |
| Sky Ranch Horn Creek | Custer | 582 | Transient non-community | Groundwater |
| Alvarado Cg 4122 | Custer | 300 | Transient non-community | Groundwater |
| Lodge at San Isabel | Custer | 200 | Transient non-community | Groundwater |
| Ophir Creek No 4 | Custer | 186 | Transient non-community | Groundwater |
| Rainbow Trail Lutheran Camp | Custer | 184 | 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, “St Charles Cg, PWSID CO0314485, Colorado”, https://aquacensus.com/water-systems/colorado/st-charles-cg-co0314485 (data as of October 1, 2026).