Public water system · CO0240550
ActiveMoon Valley Ranch Resort
At a glance
Moon Valley Ranch Resort (PWSID CO0240550) is an active transient non-community water system in Mineral County, Colorado. It reports serving 53 people through 47 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
53
Service connections
47
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Moon Valley Ranch Resort compare with other water systems in Mineral County?
By EPA's size categories, Moon Valley Ranch Resort is a very small system (500 people or fewer). Mineral County has 14 active public water systems. Its population served is well below the county average of 393 people per system, and accounts for 1% of the 5,506 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 Moon Valley Ranch Resort is about 63% below 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 Moon Valley Ranch Resort?
EPA lists Moon Valley Ranch Resort 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. 12 of the 14 active systems in Mineral County (86%) are also privately owned.
Does Moon Valley Ranch Resort have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025. The violations listed here began between January 2012 and July 2025. By type: 8 monitoring, 2 monitoring and reporting, 1 required treatment not met and 1 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (10 of them). EPA lists 11 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-11 | Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D | Revised Total Coliform Rulecode 8000 | Yes | Unaddressed |
| 2025-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2020-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-07-11 | ReportingReport Startup Procedures Cert Form (RTCR) · code 4C | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2012-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | 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.
Moon Valley Ranch Resort: frequently asked questions
Who runs Moon Valley Ranch Resort?
Moon Valley Ranch Resort (PWSID CO0240550) is a transient non-community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Moon Valley Ranch Resort serve?
Moon Valley Ranch Resort reports serving 53 people through 47 service connections in Mineral County, Colorado.
Where does Moon Valley Ranch Resort 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 Moon Valley Ranch Resort have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 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 Moon Valley Ranch Resort'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, one is health-based, and the most recent began in July 2025. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Moon Valley Ranch Resort's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Moon Valley Ranch Resort 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 Mineral County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wolf Creek Ski Corp | Mineral | 2,050 | Transient non-community | Surface water |
| Creede City of | Mineral | 1,965 | Community | Groundwater |
| Mountain View at Rivers Edge Rv | Mineral | 640 | Transient non-community | Groundwater |
| Antlers Rio Grande Lodge | Mineral | 193 | Transient non-community | Groundwater |
| Four U R Guest Ranch | Mineral | 111 | Transient non-community | Groundwater |
| Rivercrest Acres Hoa | Mineral | 110 | Transient non-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, “Moon Valley Ranch Resort, PWSID CO0240550, Colorado”, https://aquacensus.com/water-systems/colorado/moon-valley-ranch-resort-co0240550 (data as of October 1, 2026).