Public water system · OR4191056
ActiveOprd Mccormack Cg
At a glance
Oprd Mccormack Cg (PWSID OR4191056) is an active transient non-community water system in Malheur County, Oregon. It reports serving 250 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in August 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
250
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Oprd Mccormack Cg compare with other water systems in Malheur County?
By EPA's size categories, Oprd Mccormack Cg is a very small system (500 people or fewer). Malheur County has 20 active public water systems, and Oprd Mccormack Cg is the 5th-largest of them by population served. Its population served is well below the county average of 1,067 people per system, and accounts for 1.2% of the 21,335 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Oprd Mccormack Cg is about 74% 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. Oregon has 1,250 active transient non-community water systems, 49% of the state's 2,536 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,175 Oregon systems (86%) list groundwater as their primary source.
Who owns and regulates Oprd Mccormack Cg?
EPA lists Oprd Mccormack Cg as owned by a state government. The OR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 3 of the 20 active systems in Malheur County (15%) are also owned by a state government.
Does Oprd Mccormack Cg have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in August 2024. The violations listed here began between January 2012 and August 2024. By type: 10 monitoring and reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is E. coli (3 of them). 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 |
|---|---|---|---|---|
| 2024-08-17 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2017-05-20 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2017-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-07-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2016-04-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2014-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2014-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-03-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-02-20 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | 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.
Oprd Mccormack Cg: frequently asked questions
Who runs Oprd Mccormack Cg?
Oprd Mccormack Cg (PWSID OR4191056) is a transient non-community water system owned by a state government. It is regulated by the OR state drinking water program.
How many people does Oprd Mccormack Cg serve?
Oprd Mccormack Cg reports serving 250 people through 3 service connections in Malheur County, Oregon.
Where does Oprd Mccormack Cg 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 Oprd Mccormack Cg 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 August 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 Oprd Mccormack Cg'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 August 2024. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Oprd Mccormack Cg's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oprd Mccormack Cg 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 Malheur County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ontario, City of | Malheur | 14,465 | Community | Surface water |
| Nyssa, City of | Malheur | 3,285 | Community | Groundwater |
| Vale, City of | Malheur | 1,837 | Community | Groundwater |
| Fry Foods | Malheur | 280 | Non-transient non-community | Groundwater |
| Jordan Valley, City of | Malheur | 175 | Community | Groundwater |
| Harper High/Elementary Sd 66 | Malheur | 170 | Non-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, “Oprd Mccormack Cg, PWSID OR4191056, Oregon”, https://aquacensus.com/water-systems/oregon/oprd-mccormack-cg-or4191056 (data as of October 1, 2026).