Public water system · OR4193530
ActiveOdot Hd Cow Canyon Rest Area
At a glance
Odot Hd Cow Canyon Rest Area (PWSID OR4193530) is an active transient non-community water system in Wasco County, Oregon. It reports serving 400 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2015.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
400
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Odot Hd Cow Canyon Rest Area compare with other water systems in Wasco County?
By EPA's size categories, Odot Hd Cow Canyon Rest Area is a very small system (500 people or fewer). Wasco County has 44 active public water systems. Its population served is about 31% below the county average of 583 people per system, and accounts for 1.6% of the 25,664 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 Odot Hd Cow Canyon Rest Area is about 178% 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 Odot Hd Cow Canyon Rest Area?
EPA lists Odot Hd Cow Canyon Rest Area 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 44 active systems in Wasco County (6.8%) are also owned by a state government.
Does Odot Hd Cow Canyon Rest Area have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2015. The violations listed here began between January 1992 and October 2015. By type: 11 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2015-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1996-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Odot Hd Cow Canyon Rest Area: frequently asked questions
Who runs Odot Hd Cow Canyon Rest Area?
Odot Hd Cow Canyon Rest Area (PWSID OR4193530) 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 Odot Hd Cow Canyon Rest Area serve?
Odot Hd Cow Canyon Rest Area reports serving 400 people through 1 service connection in Wasco County, Oregon.
Where does Odot Hd Cow Canyon Rest Area 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 Odot Hd Cow Canyon Rest Area have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2015. 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 Odot Hd Cow Canyon Rest Area'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 11 violations for this system; none is health-based, and the most recent began in October 2015. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Odot Hd Cow Canyon Rest Area's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Odot Hd Cow Canyon Rest Area 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 Wasco County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| The Dalles, City of | Wasco | 13,010 | Community | Surface water |
| Chenowith PUD | Wasco | 4,500 | Community | Groundwater |
| Barlow Water District | Wasco | 900 | Community | Groundwater |
| Ote Memaloose Rest Area | Wasco | 800 | Transient non-community | Groundwater |
| Dufur, City of | Wasco | 610 | Community | Groundwater |
| Young Life | Wasco | 497 | 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, “Odot Hd Cow Canyon Rest Area, PWSID OR4193530, Oregon”, https://aquacensus.com/water-systems/oregon/odot-hd-cow-canyon-rest-area-or4193530 (data as of October 1, 2026).