Public water system · CO0210017
ActiveMill Creek Wia
At a glance
Mill Creek Wia (PWSID CO0210017) is an active community water system in Clear Creek County, Colorado. It reports serving 67 people through 40 service connections. Its primary water source is surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
67
Service connections
40
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Mill Creek Wia compare with other water systems in Clear Creek County?
By EPA's size categories, Mill Creek Wia is a very small system (500 people or fewer). Clear Creek County has 32 active public water systems. Its population served is well below the county average of 899 people per system, and accounts for 0.2% of the 28,778 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 Mill Creek Wia 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 228 Colorado systems (10%) list surface water as their primary source.
Who owns and regulates Mill Creek Wia?
EPA lists Mill Creek Wia 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. 20 of the 32 active systems in Clear Creek County (63%) are also privately owned.
Does Mill Creek Wia have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2024. The violations listed here began between January 2024 and December 2024. By type: 12 monitoring and reporting. The contaminants or rules involved are Interim Enhanced Surface Water Treatment Rule, Surface Water Treatment Rule, Chromium and Nickel. 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 |
|---|---|---|---|---|
| 2024-12-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2024-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Berylliumcode 1075 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | 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.
Mill Creek Wia: frequently asked questions
Who runs Mill Creek Wia?
Mill Creek Wia (PWSID CO0210017) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Mill Creek Wia serve?
Mill Creek Wia reports serving 67 people through 40 service connections in Clear Creek County, Colorado.
Where does Mill Creek Wia get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Mill Creek Wia 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 December 2024. 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 Mill Creek Wia'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 December 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Mill Creek Wia's water quality report?
As a community water system, Mill Creek Wia 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 Clear Creek County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Idaho Springs City of | Clear Creek | 10,432 | Community | Surface water |
| Georgetown Town of | Clear Creek | 5,315 | Community | Surface water |
| Mighty Argo Metropolitan District #2 | Clear Creek | 2,000 | Transient non-community | Purchased surface water |
| Vail Mountain Coffee and Tea | Clear Creek | 1,528 | Transient non-community | Groundwater |
| Echo Lake Lodge | Clear Creek | 1,510 | Transient non-community | Groundwater |
| Lookout Mountain Wd | Clear Creek | 1,378 | 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, “Mill Creek Wia, PWSID CO0210017, Colorado”, https://aquacensus.com/water-systems/colorado/mill-creek-wia-co0210017 (data as of October 1, 2026).