Public water system · CO0125155
ActiveColumbine Lake Wsd
At a glance
Columbine Lake Wsd (PWSID CO0125155) is an active community water system in Grand County, Colorado. It reports serving 428 people through 463 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
428
Service connections
463
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Columbine Lake Wsd compare with other water systems in Grand County?
By EPA's size categories, Columbine Lake Wsd is a very small system (500 people or fewer). Grand County has 77 active public water systems. Its population served is about 41% below the county average of 728 people per system, and accounts for 0.8% 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 community water system reports serving 6,703 people, so Columbine Lake Wsd is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Colorado has 1,068 active community water systems, 48% 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 Columbine Lake Wsd?
EPA lists Columbine Lake Wsd as owned by a local 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. 17 of the 77 active systems in Grand County (22%) are also owned by a local government.
Does Columbine Lake Wsd have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2007. The violations listed here began between April 2007 and April 2007. By type: 12 monitoring and reporting. The contaminants or rules involved are Cadmium, Thallium, Chromium and Beryllium. EPA lists 12 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 |
|---|---|---|---|---|
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Berylliumcode 1075 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
The 12 most recent 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.
Columbine Lake Wsd: frequently asked questions
Who runs Columbine Lake Wsd?
Columbine Lake Wsd (PWSID CO0125155) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Columbine Lake Wsd serve?
Columbine Lake Wsd reports serving 428 people through 463 service connections in Grand County, Colorado.
Where does Columbine Lake Wsd 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 Columbine Lake Wsd have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2007. 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 Columbine Lake Wsd'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in April 2007. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Columbine Lake Wsd's water quality report?
As a community water system, Columbine Lake Wsd must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Columbine Lake Wsd, PWSID CO0125155, Colorado”, https://aquacensus.com/water-systems/colorado/columbine-lake-wsd-co0125155 (data as of October 1, 2026).