Public water system · OR4194424
ActiveLake Simtustus Rv Park
At a glance
Lake Simtustus Rv Park (PWSID OR4194424) is an active transient non-community water system in Jefferson County, Oregon. It reports serving 350 people through 18 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 10 violations for this system; none is health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
350
Service connections
18
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Lake Simtustus Rv Park compare with other water systems in Jefferson County?
By EPA's size categories, Lake Simtustus Rv Park is a very small system (500 people or fewer). Jefferson County has 31 active public water systems. Its population served is about 60% below the county average of 866 people per system, and accounts for 1.3% 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 Lake Simtustus Rv Park is about 143% 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 Lake Simtustus Rv Park?
EPA lists Lake Simtustus Rv Park 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 Lake Simtustus Rv Park have drinking water violations?
EPA's records list 10 violations for this system; none is health-based, and the most recent began in January 2026. The violations listed here began between April 1991 and January 2026. By type: 9 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (7 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2026-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2009-01-01 | 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 |
| 2007-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-10-01 | 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 |
| 1996-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1991-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 10 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.
Lake Simtustus Rv Park: frequently asked questions
Who runs Lake Simtustus Rv Park?
Lake Simtustus Rv Park (PWSID OR4194424) is a transient non-community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Lake Simtustus Rv Park serve?
Lake Simtustus Rv Park reports serving 350 people through 18 service connections in Jefferson County, Oregon.
Where does Lake Simtustus Rv 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 Lake Simtustus Rv Park have any drinking water violations?
EPA's records list 10 violations for this system; none is health-based, and the most recent began in January 2026. 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 Lake Simtustus Rv 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 10 violations for this system; none is health-based, and the most recent began in January 2026. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Lake Simtustus Rv Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Lake Simtustus Rv 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 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, “Lake Simtustus Rv Park, PWSID OR4194424, Oregon”, https://aquacensus.com/water-systems/oregon/lake-simtustus-rv-park-or4194424 (data as of October 1, 2026).