Public water system · CO0314614
ActiveOphir Creek No 4
At a glance
Ophir Creek No 4 (PWSID CO0314614) is an active transient non-community water system in Custer County, Colorado. It reports serving 186 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in May 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
186
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Ophir Creek No 4 compare with other water systems in Custer County?
By EPA's size categories, Ophir Creek No 4 is a very small system (500 people or fewer). Custer County has 17 active public water systems, and Ophir Creek No 4 is the 5th-largest of them by population served. Its population served is about 24% below the county average of 245 people per system, and accounts for 4.5% of the 4,164 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 Ophir Creek No 4 is about 29% above 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 Ophir Creek No 4?
EPA lists Ophir Creek No 4 as owned by the federal 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. 8 of the 17 active systems in Custer County (47%) are also owned by the federal government.
Does Ophir Creek No 4 have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in May 2021. The violations listed here began between June 1998 and May 2021. By type: 5 monitoring and reporting, 2 monitoring and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2021-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-06-11 | ReportingReport Startup Procedures Cert Form (RTCR) · code 4C | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 8 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.
Ophir Creek No 4: frequently asked questions
Who runs Ophir Creek No 4?
Ophir Creek No 4 (PWSID CO0314614) is a transient non-community water system owned by the federal government. It is regulated by the CO state drinking water program.
How many people does Ophir Creek No 4 serve?
Ophir Creek No 4 reports serving 186 people through 1 service connection in Custer County, Colorado.
Where does Ophir Creek No 4 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 Ophir Creek No 4 have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in May 2021. 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 Ophir Creek No 4'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 8 violations for this system; none is health-based, and the most recent began in May 2021. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Ophir Creek No 4's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ophir Creek No 4 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 Custer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Round Mountain Wsd | Custer | 1,950 | Community | Groundwater |
| Sky Ranch Horn Creek | Custer | 582 | Transient non-community | Groundwater |
| Alvarado Cg 4122 | Custer | 300 | Transient non-community | Groundwater |
| Lodge at San Isabel | Custer | 200 | Transient non-community | Groundwater |
| Rainbow Trail Lutheran Camp | Custer | 184 | Transient non-community | Groundwater |
| La Vista Cg | Custer | 180 | 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, “Ophir Creek No 4, PWSID CO0314614, Colorado”, https://aquacensus.com/water-systems/colorado/ophir-creek-no-4-co0314614 (data as of October 1, 2026).