Public water system · OR4190939
ActiveTwin Rocks Friends Camp
At a glance
Twin Rocks Friends Camp (PWSID OR4190939) is an active transient non-community water system in Tillamook County, Oregon. It reports serving 115 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
115
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Twin Rocks Friends Camp compare with other water systems in Tillamook County?
By EPA's size categories, Twin Rocks Friends Camp is a very small system (500 people or fewer). Tillamook County has 63 active public water systems. Its population served is well below the county average of 538 people per system, and accounts for 0.3% 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 Twin Rocks Friends Camp is about 20% 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 Twin Rocks Friends Camp?
EPA lists Twin Rocks Friends Camp 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. 28 of the 63 active systems in Tillamook County (44%) are also privately owned.
Does Twin Rocks Friends Camp have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2019. The violations listed here began between October 2011 and July 2019. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Coliphage (5 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 |
|---|---|---|---|---|
| 2019-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2015-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2013-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2012-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2012-01-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | Coliphagecode 3028 | No | Resolved |
| 2011-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Twin Rocks Friends Camp: frequently asked questions
Who runs Twin Rocks Friends Camp?
Twin Rocks Friends Camp (PWSID OR4190939) is a transient non-community water system privately owned. It is regulated by the OR state drinking water program.
How many people does Twin Rocks Friends Camp serve?
Twin Rocks Friends Camp reports serving 115 people through 1 service connection in Tillamook County, Oregon.
Where does Twin Rocks Friends Camp 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 Twin Rocks Friends Camp 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 July 2019. 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 Twin Rocks Friends Camp'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 July 2019. For current results, consult EPA ECHO, or the OR state drinking water program.
Where can I find Twin Rocks Friends Camp's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Twin Rocks Friends Camp 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, “Twin Rocks Friends Camp, PWSID OR4190939, Oregon”, https://aquacensus.com/water-systems/oregon/twin-rocks-friends-camp-or4190939 (data as of October 1, 2026).