Public water system · OR4195544
ActiveOprd Thompsons Mills Park
At a glance
Oprd Thompsons Mills Park (PWSID OR4195544) is an active transient non-community water system in Linn County, Oregon. It reports serving 28 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 6 violations for this system; none is health-based, and the most recent began in January 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
28
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Oprd Thompsons Mills Park compare with other water systems in Linn County?
By EPA's size categories, Oprd Thompsons Mills Park is a very small system (500 people or fewer). Linn County has 161 active public water systems. Its population served is well below the county average of 769 people per system, and accounts for less than 0.1% of the 123,772 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 Thompsons Mills Park is well 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. 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 Thompsons Mills Park?
EPA lists Oprd Thompsons Mills Park 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. 7 of the 161 active systems in Linn County (4.3%) are also owned by a state government.
Does Oprd Thompsons Mills Park have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in January 2025. The violations listed here began between January 2018 and January 2025. By type: 3 monitoring and reporting and 3 monitoring. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 5 as resolved 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. 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 |
|---|---|---|---|---|
| 2025-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Archived |
| 2019-06-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2019-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-10-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 6 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 Thompsons Mills Park: frequently asked questions
Who runs Oprd Thompsons Mills Park?
Oprd Thompsons Mills Park (PWSID OR4195544) 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 Thompsons Mills Park serve?
Oprd Thompsons Mills Park reports serving 28 people through 1 service connection in Linn County, Oregon.
Where does Oprd Thompsons Mills Park 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 Thompsons Mills Park have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in January 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 Oprd Thompsons Mills Park'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 6 violations for this system; none is health-based, and the most recent began in January 2025. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Oprd Thompsons Mills Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oprd Thompsons Mills Park 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 Linn County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Albany, City of | Linn | 57,997 | Community | Surface water |
| Lebanon, City of | Linn | 18,945 | Community | Surface water |
| Sweet Home, City of | Linn | 10,322 | Community | Surface water |
| Harrisburg, City of | Linn | 3,684 | Community | Groundwater |
| City of Millersburg | Linn | 2,615 | Community | Purchased surface water |
| Brownsville, City of | Linn | 1,906 | Community | Groundwater under influence of 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, “Oprd Thompsons Mills Park, PWSID OR4195544, Oregon”, https://aquacensus.com/water-systems/oregon/oprd-thompsons-mills-park-or4195544 (data as of October 1, 2026).