Public water system · OR4191998
ActiveNps Oregon Caves Natl Mon
At a glance
Nps Oregon Caves Natl Mon (PWSID OR4191998) is an active transient non-community water system in Josephine County, Oregon. It reports serving 280 people through 1 service connection. Its primary water source is surface water, and EPA lists it as owned by the federal government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
280
Service connections
1
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Nps Oregon Caves Natl Mon compare with other water systems in Josephine County?
By EPA's size categories, Nps Oregon Caves Natl Mon is a very small system (500 people or fewer). Josephine County has 150 active public water systems. Its population served is about 31% below the county average of 403 people per system, and accounts for 0.5% of the 60,442 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 Nps Oregon Caves Natl Mon 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 211 Oregon systems (8.3%) list surface water as their primary source.
Who owns and regulates Nps Oregon Caves Natl Mon?
EPA lists Nps Oregon Caves Natl Mon as owned by the federal 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. 5 of the 150 active systems in Josephine County (3.3%) are also owned by the federal government.
Does Nps Oregon Caves Natl Mon have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2025. The violations listed here began between May 2023 and October 2025. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Surface Water Treatment Rule (11 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-10-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-02-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2023-05-21 | 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.
Nps Oregon Caves Natl Mon: frequently asked questions
Who runs Nps Oregon Caves Natl Mon?
Nps Oregon Caves Natl Mon (PWSID OR4191998) is a transient non-community water system owned by the federal government. It is regulated by the OR state drinking water program.
How many people does Nps Oregon Caves Natl Mon serve?
Nps Oregon Caves Natl Mon reports serving 280 people through 1 service connection in Josephine County, Oregon.
Where does Nps Oregon Caves Natl Mon get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Nps Oregon Caves Natl Mon have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 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 Nps Oregon Caves Natl Mon'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, none is health-based, and the most recent began in October 2025. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Nps Oregon Caves Natl Mon's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Nps Oregon Caves Natl Mon 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 Josephine County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grants Pass, City of | Josephine | 37,138 | Community | Surface water |
| Rogue Community College | Josephine | 2,400 | Non-transient non-community | Purchased surface water |
| Cave Junction, City of | Josephine | 2,160 | Community | Surface water |
| Ote Manzanita Rest Area | Josephine | 1,200 | Transient non-community | Groundwater |
| Hidden Valley High | Josephine | 546 | Non-transient non-community | Groundwater |
| Lil Pantry Xpress Merlin | Josephine | 512 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Nps Oregon Caves Natl Mon, PWSID OR4191998, Oregon”, https://aquacensus.com/water-systems/oregon/nps-oregon-caves-natl-mon-or4191998 (data as of October 1, 2026).