Public water system · CO0347305
ActiveHall Valley Cg
At a glance
Hall Valley Cg (PWSID CO0347305) is an active transient non-community water system in Park County, Colorado. It reports serving 54 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; 1 is health-based, and the most recent began in May 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
54
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Hall Valley Cg compare with other water systems in Park County?
By EPA's size categories, Hall Valley Cg is a very small system (500 people or fewer). Park County has 76 active public water systems. Its population served is well below the county average of 164 people per system, and accounts for 0.4% of the 12,448 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 Hall Valley Cg is about 62% 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 Hall Valley Cg?
EPA lists Hall Valley 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. 21 of the 76 active systems in Park County (28%) are also owned by the federal government.
Does Hall Valley Cg have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2021. The violations listed here began between September 2008 and May 2021. By type: 1 public notice, recordkeeping or other, 1 required treatment not met and 1 monitoring and reporting. The contaminants or rules involved are Public Notice, Groundwater Rule and Total coliform bacteria (TCR). 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 |
|---|---|---|---|---|
| 2021-05-29 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-11-23 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2008-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | 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.
Hall Valley Cg: frequently asked questions
Who runs Hall Valley Cg?
Hall Valley Cg (PWSID CO0347305) 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 Hall Valley Cg serve?
Hall Valley Cg reports serving 54 people through 1 service connection in Park County, Colorado.
Where does Hall Valley 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 Hall Valley Cg have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in May 2021. 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 Hall Valley 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; 1 is health-based, and the most recent began in May 2021. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Hall Valley Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hall Valley 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 Park County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Fairplay Town of | Park | 909 | Community | Groundwater under influence of surface water |
| Badger Basin Country Store | Park | 856 | Transient non-community | Groundwater |
| Camp Alexander Boy Scouts | Park | 785 | Transient non-community | Groundwater under influence of surface water |
| Deer Creek Md | Park | 662 | Non-transient non-community | Groundwater |
| Camp Id Ra Ha Je | Park | 522 | Transient non-community | Groundwater |
| Bailey Wsd | Park | 483 | 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, “Hall Valley Cg, PWSID CO0347305, Colorado”, https://aquacensus.com/water-systems/colorado/hall-valley-cg-co0347305 (data as of October 1, 2026).