Public water system · CO0233800
ActiveSki Cooper
At a glance
Ski Cooper (PWSID CO0233800) is an active transient non-community water system in Lake County, Colorado. It reports serving 973 people through 4 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
973
Service connections
4
Primary source
GU
Groundwater under influence of surface water
System type
TNCWS
Transient non-community water system
System record
How does Ski Cooper compare with other water systems in Lake County?
By EPA's size categories, Ski Cooper is a small system (501 to 3,300 people). Lake County has 19 active public water systems, and Ski Cooper is the 2nd-largest of them by population served. Its population served is about 58% above the county average of 616 people per system, and accounts for 8.3% of the 11,697 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 Ski Cooper is about 6.8 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 under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 166 Colorado systems (7.5%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Ski Cooper?
EPA lists Ski Cooper as privately owned. 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. 13 of the 19 active systems in Lake County (68%) are also privately owned.
Does Ski Cooper have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in June 2025. The violations listed here began between March 1996 and June 2025. By type: 4 monitoring and reporting. The contaminants or rules involved are E. coli, Surface Water Treatment Rule, Interim Enhanced Surface Water Treatment Rule and Total coliform bacteria (TCR). EPA lists 4 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 |
|---|---|---|---|---|
| 2025-06-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2022-03-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2022-03-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 1996-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 4 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.
Ski Cooper: frequently asked questions
Who runs Ski Cooper?
Ski Cooper (PWSID CO0233800) is a transient non-community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Ski Cooper serve?
Ski Cooper reports serving 973 people through 4 service connections in Lake County, Colorado.
Where does Ski Cooper get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Ski Cooper have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in June 2025. 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 Ski Cooper'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 4 violations for this system; none is health-based, and the most recent began in June 2025. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Ski Cooper's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ski Cooper 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 Lake County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Parkville Wd | Lake | 7,500 | Community | Surface water |
| Climax Climax Mine | Lake | 615 | Non-transient non-community | Surface water |
| White Star Host Site | Lake | 528 | Transient non-community | Groundwater |
| Lake Fork MHP | Lake | 487 | Community | Groundwater |
| Sugar Loafin Rv Campground | Lake | 201 | Transient non-community | Groundwater |
| Mountain Valley Estates | Lake | 200 | 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, “Ski Cooper, PWSID CO0233800, Colorado”, https://aquacensus.com/water-systems/colorado/ski-cooper-co0233800 (data as of October 1, 2026).