Public water system · CO0110001
ActiveArapahoe MHP
At a glance
Arapahoe MHP (PWSID CO0110001) is an active community water system in Clear Creek County, Colorado. It reports serving 27 people through 14 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in October 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
27
Service connections
14
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Arapahoe MHP compare with other water systems in Clear Creek County?
By EPA's size categories, Arapahoe MHP 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 less than 0.1% 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 Arapahoe MHP 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 Arapahoe MHP?
EPA lists Arapahoe MHP 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 Arapahoe MHP have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in October 1996. The violations listed here began between August 1991 and October 1996. By type: 2 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 2 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1996-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1991-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 1991-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Arapahoe MHP: frequently asked questions
Who runs Arapahoe MHP?
Arapahoe MHP (PWSID CO0110001) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Arapahoe MHP serve?
Arapahoe MHP reports serving 27 people through 14 service connections in Clear Creek County, Colorado.
Where does Arapahoe MHP 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 Arapahoe MHP have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in October 1996. 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 Arapahoe MHP'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; 2 are health-based, and the most recent began in October 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Arapahoe MHP's water quality report?
As a community water system, Arapahoe MHP 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, “Arapahoe MHP, PWSID CO0110001, Colorado”, https://aquacensus.com/water-systems/colorado/arapahoe-mhp-co0110001 (data as of October 1, 2026).