Public water system · OR4194597
ActiveWallowa Lake Tramway
At a glance
Wallowa Lake Tramway (PWSID OR4194597) is an active transient non-community water system in Wallowa County, Oregon. It reports serving 300 people through 1 service connection. 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 September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Wallowa Lake Tramway compare with other water systems in Wallowa County?
By EPA's size categories, Wallowa Lake Tramway is a very small system (500 people or fewer). Wallowa County has 9 active public water systems, and Wallowa Lake Tramway is the 6th-largest of them by population served. Its population served is about half of the county average of 595 people per system, and accounts for 5.6% of the 5,359 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 Wallowa Lake Tramway is about twice 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 Wallowa Lake Tramway?
EPA lists Wallowa Lake Tramway as privately owned. 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 9 active systems in Wallowa County (33%) are also privately owned.
Does Wallowa Lake Tramway have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2025. The violations listed here began between October 2012 and September 2025. By type: 6 monitoring and reporting, 4 monitoring, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (5 of them). EPA lists 8 as resolved, 3 as unaddressed and 1 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2025-09-02 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2025-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2019-10-06 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2016-11-13 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2016-10-10 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2016-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2015-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-10-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | 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.
Wallowa Lake Tramway: frequently asked questions
Who runs Wallowa Lake Tramway?
Wallowa Lake Tramway (PWSID OR4194597) is a transient non-community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Wallowa Lake Tramway serve?
Wallowa Lake Tramway reports serving 300 people through 1 service connection in Wallowa County, Oregon.
Where does Wallowa Lake Tramway 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 Wallowa Lake Tramway 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 September 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 Wallowa Lake Tramway'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 September 2025. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Wallowa Lake Tramway's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Wallowa Lake Tramway 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 Wallowa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Enterprise, City of | Wallowa | 2,107 | Community | Groundwater |
| Joseph, City of | Wallowa | 1,182 | Community | Surface water |
| Wallowa, City of | Wallowa | 840 | Community | Groundwater |
| Lostine, City of | Wallowa | 350 | Community | Groundwater |
| Wallowa Lake Co Service Dist | Wallowa | 350 | Community | Groundwater |
| Lakeshore Wtr & Develop Co-Op | Wallowa | 165 | Transient non-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, “Wallowa Lake Tramway, PWSID OR4194597, Oregon”, https://aquacensus.com/water-systems/oregon/wallowa-lake-tramway-or4194597 (data as of October 1, 2026).