Public water system · CO0325143
ActiveArapaho Bay Cg
At a glance
Arapaho Bay Cg (PWSID CO0325143) is an active transient non-community water system in Grand County, Colorado. It reports serving 720 people through 18 service connections. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
720
Service connections
18
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Arapaho Bay Cg compare with other water systems in Grand County?
By EPA's size categories, Arapaho Bay Cg is a small system (501 to 3,300 people). Grand County has 77 active public water systems. Its population served is roughly in line with the county average of 728 people per system, and accounts for 1.3% of the 56,067 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 Arapaho Bay Cg is about 5 times 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 Arapaho Bay Cg?
EPA lists Arapaho Bay 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. 14 of the 77 active systems in Grand County (18%) are also owned by the federal government.
Does Arapaho Bay Cg have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2020. The violations listed here began between July 2019 and July 2020. By type: 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Public Notice (2 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2020-07-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-07-12 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
All 2 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.
Arapaho Bay Cg: frequently asked questions
Who runs Arapaho Bay Cg?
Arapaho Bay Cg (PWSID CO0325143) 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 Arapaho Bay Cg serve?
Arapaho Bay Cg reports serving 720 people through 18 service connections in Grand County, Colorado.
Where does Arapaho Bay 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 Arapaho Bay Cg have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in July 2020. 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 Arapaho Bay 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 2 violations for this system; none is health-based, and the most recent began in July 2020. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Arapaho Bay Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Arapaho Bay 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 Grand County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Winter Park Wsd | Grand | 6,635 | Community | Surface water |
| Grand County Water No 1 | Grand | 5,400 | Community | Surface water |
| Winter Park Resort Sunspot | Grand | 5,006 | Transient non-community | Groundwater |
| Winter Park Resort Lunch Rock | Grand | 5,001 | Transient non-community | Groundwater |
| Winter Park Resort Snoasis | Grand | 5,001 | Transient non-community | Groundwater |
| Winter Park Ranch Wsd | Grand | 3,250 | 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, “Arapaho Bay Cg, PWSID CO0325143, Colorado”, https://aquacensus.com/water-systems/colorado/arapaho-bay-cg-co0325143 (data as of October 1, 2026).