Public water system · OR4191009
ActiveOprd Oswald West State Park
At a glance
Oprd Oswald West State Park (PWSID OR4191009) is an active transient non-community water system in Tillamook County, Oregon. It reports serving 1,708 people through 1 service connection. Its primary water source is surface water, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,708
Service connections
1
Primary source
SW
Surface water
System type
TNCWS
Transient non-community water system
System record
How does Oprd Oswald West State Park compare with other water systems in Tillamook County?
By EPA's size categories, Oprd Oswald West State Park is a small system (501 to 3,300 people). Tillamook County has 63 active public water systems. Its population served is about 3.2 times the county average of 538 people per system, and accounts for 5% of the 33,890 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 Oswald West State Park is about 12 times 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 Oprd Oswald West State Park?
EPA lists Oprd Oswald West State 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. 8 of the 63 active systems in Tillamook County (13%) are also owned by a state government.
Does Oprd Oswald West State Park have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. The violations listed here began between January 2024 and December 2025. By type: 9 monitoring and reporting, 2 monitoring and 1 required treatment not met. The contaminant or rule involved most often is Surface Water Treatment Rule (7 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 |
|---|---|---|---|---|
| 2025-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-12-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2025-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-10-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2025-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | 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.
Oprd Oswald West State Park: frequently asked questions
Who runs Oprd Oswald West State Park?
Oprd Oswald West State Park (PWSID OR4191009) 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 Oswald West State Park serve?
Oprd Oswald West State Park reports serving 1,708 people through 1 service connection in Tillamook County, Oregon.
Where does Oprd Oswald West State Park 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 Oprd Oswald West State Park 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 December 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 Oswald West State 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. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in December 2025. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Oprd Oswald West State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oprd Oswald West State 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 Tillamook County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Tillamook Water Dept, City of | Tillamook | 5,265 | Community | Surface water |
| Manzanita, City of | Tillamook | 3,200 | Community | Purchased groundwater |
| Oprd Cape Lookout State Park | Tillamook | 2,005 | Transient non-community | Surface water |
| Fairview Water District | Tillamook | 1,930 | Community | Groundwater |
| Netarts Water District | Tillamook | 1,800 | Community | Surface water |
| Neskowin Reg Water Dist | Tillamook | 1,735 | 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, “Oprd Oswald West State Park, PWSID OR4191009, Oregon”, https://aquacensus.com/water-systems/oregon/oprd-oswald-west-state-park-or4191009 (data as of October 1, 2026).