Public water system · OR4191172
ActiveMadsen Spring Wtr Assoc
At a glance
Madsen Spring Wtr Assoc (PWSID OR4191172) is an active transient non-community water system in Jefferson County, Oregon. It reports serving 40 people through 20 service connections. 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 April 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40
Service connections
20
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Madsen Spring Wtr Assoc compare with other water systems in Jefferson County?
By EPA's size categories, Madsen Spring Wtr Assoc is a very small system (500 people or fewer). Jefferson County has 31 active public water systems. Its population served is well below the county average of 866 people per system, and accounts for 0.1% of the 26,851 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 Madsen Spring Wtr Assoc 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 Madsen Spring Wtr Assoc?
EPA lists Madsen Spring Wtr Assoc 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. 15 of the 31 active systems in Jefferson County (48%) are also privately owned.
Does Madsen Spring Wtr Assoc have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2017. The violations listed here began between April 1993 and April 2017. By type: 10 monitoring and reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (9 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2017-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2008-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2002-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2000-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
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.
Madsen Spring Wtr Assoc: frequently asked questions
Who runs Madsen Spring Wtr Assoc?
Madsen Spring Wtr Assoc (PWSID OR4191172) is a transient non-community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Madsen Spring Wtr Assoc serve?
Madsen Spring Wtr Assoc reports serving 40 people through 20 service connections in Jefferson County, Oregon.
Where does Madsen Spring Wtr Assoc 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 Madsen Spring Wtr Assoc 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 April 2017. 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 Madsen Spring Wtr Assoc'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 April 2017. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Madsen Spring Wtr Assoc's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Madsen Spring Wtr Assoc 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Deschutes Valley Water Dist | Jefferson | 11,700 | Community | Groundwater |
| Crooked River Ranch Wtr Co | Jefferson | 4,000 | Community | Groundwater |
| Madras, City of | Jefferson | 3,940 | Community | Groundwater |
| Oprd Peter Ogden State Wayside | Jefferson | 2,000 | Transient non-community | Groundwater |
| Oprd Cove Palisades - Deschutes River | Jefferson | 950 | Transient non-community | Groundwater |
| Oprd Cove Palisades - Crooked River | Jefferson | 600 | 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, “Madsen Spring Wtr Assoc, PWSID OR4191172, Oregon”, https://aquacensus.com/water-systems/oregon/madsen-spring-wtr-assoc-or4191172 (data as of October 1, 2026).